diff --git a/code/__HELPERS/mobs.dm b/code/__HELPERS/mobs.dm
index 6be2b411376..ff127fd3a48 100644
--- a/code/__HELPERS/mobs.dm
+++ b/code/__HELPERS/mobs.dm
@@ -355,24 +355,35 @@ This is always put in the attack log.
 	if(progress)
 		qdel(progbar)
 
-/proc/do_after(mob/user, delay, needhand = 1, atom/target = null, progress = 1, datum/callback/extra_checks = null)
+/*	Use this proc when you want to have code under it execute after a delay, and ensure certain conditions are met during that delay...
+ *	Such as the user not being interrupted via getting stunned or by moving off the tile they're currently on.
+ *
+ *	Example usage:
+ *
+ *	if(do_after(user, 50, target = sometarget, extra_checks = list(callback_check1, callback_check2)))
+ *		do_stuff()
+ *
+ *	This will create progress bar that lasts for 5 seconds. If the user doesn't move or otherwise do something that would cause the checks to fail in those 5 seconds, do_stuff() would execute.
+ *	The Proc returns TRUE upon success (the progress bar reached the end), or FALSE upon failure (the user moved or some other check failed)
+ */
+/proc/do_after(mob/user, delay, needhand = 1, atom/target = null, progress = 1, list/extra_checks = list(), use_default_checks = TRUE)
 	if(!user)
-		return 0
+		return FALSE
 	var/atom/Tloc = null
 	if(target)
 		Tloc = target.loc
 
 	var/atom/Uloc = user.loc
 
-	var/drifting = 0
+	var/drifting = FALSE
 	if(!user.Process_Spacemove(0) && user.inertia_dir)
-		drifting = 1
+		drifting = TRUE
 
 	var/holding = user.get_active_hand()
 
-	var/holdingnull = 1 //User's hand started out empty, check for an empty hand
+	var/holdingnull = TRUE //User's hand started out empty, check for an empty hand
 	if(holding)
-		holdingnull = 0 //Users hand started holding something, check to see if it's still holding that
+		holdingnull = FALSE //Users hand started holding something, check to see if it's still holding that
 
 	var/datum/progressbar/progbar
 	if(progress)
@@ -380,22 +391,29 @@ This is always put in the attack log.
 
 	var/endtime = world.time + delay
 	var/starttime = world.time
-	. = 1
+	. = TRUE
+
+	// By default, checks for weakness and stunned get added to the extra_checks list.
+	// Setting `use_default_checks` to FALSE means that you don't want the do_after to check for these statuses, or that you will be supplying your own checks.
+	if(use_default_checks)
+		extra_checks += CALLBACK(user, /mob.proc/IsWeakened)
+		extra_checks += CALLBACK(user, /mob.proc/IsStunned)
+
 	while(world.time < endtime)
 		sleep(1)
 		if(progress)
 			progbar.update(world.time - starttime)
 
 		if(drifting && !user.inertia_dir)
-			drifting = 0
+			drifting = FALSE
 			Uloc = user.loc
 
-		if(!user || user.stat || user.IsWeakened() || user.stunned  || (!drifting && user.loc != Uloc)|| (extra_checks && !extra_checks.Invoke()))
-			. = 0
+		if(!user || user.stat || (!drifting && user.loc != Uloc) || check_for_true_callbacks(extra_checks))
+			. = FALSE
 			break
 
 		if(Tloc && (!target || Tloc != target.loc))
-			. = 0
+			. = FALSE
 			break
 
 		if(needhand)
@@ -403,14 +421,21 @@ This is always put in the attack log.
 			//i.e the hand is used to pull some item/tool out of the construction
 			if(!holdingnull)
 				if(!holding)
-					. = 0
+					. = FALSE
 					break
 			if(user.get_active_hand() != holding)
-				. = 0
+				. = FALSE
 				break
 	if(progress)
 		qdel(progbar)
 
+// Upon any of the callbacks in the list returning TRUE, the proc will return TRUE.
+/proc/check_for_true_callbacks(list/extra_checks)
+	for(var/datum/callback/CB in extra_checks)
+		if(CB.Invoke())
+			return TRUE
+	return FALSE
+
 #define DOAFTERONCE_MAGIC "Magic~~"
 GLOBAL_LIST_INIT(do_after_once_tracker, list())
 /proc/do_after_once(mob/user, delay, needhand = 1, atom/target = null, progress = 1, attempt_cancel_message = "Attempt cancelled.")
@@ -423,7 +448,7 @@ GLOBAL_LIST_INIT(do_after_once_tracker, list())
 		to_chat(user, "<span class='warning'>[attempt_cancel_message]</span>")
 		return FALSE
 	GLOB.do_after_once_tracker[cache_key] = TRUE
-	. = do_after(user, delay, needhand, target, progress, extra_checks = CALLBACK(GLOBAL_PROC, .proc/do_after_once_checks, cache_key))
+	. = do_after(user, delay, needhand, target, progress, extra_checks = list(CALLBACK(GLOBAL_PROC, .proc/do_after_once_checks, cache_key)))
 	GLOB.do_after_once_tracker[cache_key] = FALSE
 
 /proc/do_after_once_checks(cache_key)
diff --git a/code/game/machinery/doors/airlock.dm b/code/game/machinery/doors/airlock.dm
index bf83e6c5d49..692024899a2 100644
--- a/code/game/machinery/doors/airlock.dm
+++ b/code/game/machinery/doors/airlock.dm
@@ -1003,7 +1003,7 @@ About the new airlock wires panel:
 					"<span class='notice'>You begin [welded ? "unwelding":"welding"] the airlock...</span>", \
 					"<span class='italics'>You hear welding.</span>")
 
-				if(I.use_tool(src, user, 40, volume = I.tool_volume, extra_checks = CALLBACK(src, .proc/weld_checks, I, user)))
+				if(I.use_tool(src, user, 40, volume = I.tool_volume, extra_checks = list(CALLBACK(src, .proc/weld_checks, I, user))))
 					if(!density && !welded)
 						return
 					welded = !welded
@@ -1014,7 +1014,7 @@ About the new airlock wires panel:
 				user.visible_message("[user] is welding the airlock.", \
 					"<span class='notice'>You begin repairing the airlock...</span>", \
 					"<span class='italics'>You hear welding.</span>")
-				if(I.use_tool(src, user, 40, volume = I.tool_volume, extra_checks = CALLBACK(src, .proc/weld_checks, I, user)))
+				if(I.use_tool(src, user, 40, volume = I.tool_volume, extra_checks = list(CALLBACK(src, .proc/weld_checks, I, user))))
 					obj_integrity = max_integrity
 					stat &= ~BROKEN
 					user.visible_message("[user.name] has repaired [src].", \
diff --git a/code/game/objects/items/tools/tool_behaviour.dm b/code/game/objects/items/tools/tool_behaviour.dm
index c937f80c30d..80b00dcd1ed 100644
--- a/code/game/objects/items/tools/tool_behaviour.dm
+++ b/code/game/objects/items/tools/tool_behaviour.dm
@@ -16,11 +16,11 @@
 		var/datum/callback/tool_check = CALLBACK(src, .proc/tool_check_callback, user, target, amount, extra_checks)
 
 		if(ismob(target))
-			if(!do_mob(user, target, delay, extra_checks=tool_check))
+			if(!do_mob(user, target, delay, extra_checks = list(tool_check)))
 				return
 
 		else
-			if(!do_after(user, delay, target=target, extra_checks=tool_check))
+			if(!do_after(user, delay, target=target, extra_checks = list(tool_check)))
 				return
 	else
 		// Invoke the extra checks once, just in case.
diff --git a/code/game/objects/structures/window.dm b/code/game/objects/structures/window.dm
index 9faab45cf97..8fe46ca052d 100644
--- a/code/game/objects/structures/window.dm
+++ b/code/game/objects/structures/window.dm
@@ -254,7 +254,7 @@ GLOBAL_LIST_INIT(wcCommon, pick(list("#379963", "#0d8395", "#58b5c3", "#49e46e",
 	if(!can_be_reached(user))
 		return
 	to_chat(user, "<span class='notice'>You begin to lever the window [state == WINDOW_OUT_OF_FRAME ? "into":"out of"] the frame...</span>")
-	if(!I.use_tool(src, user, decon_speed, volume = I.tool_volume, extra_checks = CALLBACK(src, .proc/check_state_and_anchored, state, anchored)))
+	if(!I.use_tool(src, user, decon_speed, volume = I.tool_volume, extra_checks = list(CALLBACK(src, .proc/check_state_and_anchored, state, anchored))))
 		return
 	state = (state == WINDOW_OUT_OF_FRAME ? WINDOW_IN_FRAME : WINDOW_OUT_OF_FRAME)
 	to_chat(user, "<span class='notice'>You pry the window [state == WINDOW_IN_FRAME ? "into":"out of"] the frame.</span>")
@@ -268,20 +268,20 @@ GLOBAL_LIST_INIT(wcCommon, pick(list("#379963", "#0d8395", "#58b5c3", "#49e46e",
 	if(reinf)
 		if(state == WINDOW_SCREWED_TO_FRAME || state == WINDOW_IN_FRAME)
 			to_chat(user, "<span class='notice'>You begin to [state == WINDOW_SCREWED_TO_FRAME ? "unscrew the window from":"screw the window to"] the frame...</span>")
-			if(!I.use_tool(src, user, decon_speed, volume = I.tool_volume, extra_checks = CALLBACK(src, .proc/check_state_and_anchored, state, anchored)))
+			if(!I.use_tool(src, user, decon_speed, volume = I.tool_volume, extra_checks = list(CALLBACK(src, .proc/check_state_and_anchored, state, anchored))))
 				return
 			state = (state == WINDOW_IN_FRAME ? WINDOW_SCREWED_TO_FRAME : WINDOW_IN_FRAME)
 			to_chat(user, "<span class='notice'>You [state == WINDOW_IN_FRAME ? "unfasten the window from":"fasten the window to"] the frame.</span>")
 		else if(state == WINDOW_OUT_OF_FRAME)
 			to_chat(user, "<span class='notice'>You begin to [anchored ? "unscrew the frame from":"screw the frame to"] the floor...</span>")
-			if(!I.use_tool(src, user, decon_speed, volume = I.tool_volume, extra_checks = CALLBACK(src, .proc/check_state_and_anchored, state, anchored)))
+			if(!I.use_tool(src, user, decon_speed, volume = I.tool_volume, extra_checks = list(CALLBACK(src, .proc/check_state_and_anchored, state, anchored))))
 				return
 			anchored = !anchored
 			update_nearby_icons()
 			to_chat(user, "<span class='notice'>You [anchored ? "fasten the frame to":"unfasten the frame from"] the floor.</span>")
 	else //if we're not reinforced, we don't need to check or update state
 		to_chat(user, "<span class='notice'>You begin to [anchored ? "unscrew the window from":"screw the window to"] the floor...</span>")
-		if(!I.use_tool(src, user, decon_speed, volume = I.tool_volume, extra_checks = CALLBACK(src, .proc/check_anchored, anchored)))
+		if(!I.use_tool(src, user, decon_speed, volume = I.tool_volume, extra_checks = list(CALLBACK(src, .proc/check_anchored, anchored))))
 			return
 		anchored = !anchored
 		air_update_turf(TRUE)
@@ -297,7 +297,7 @@ GLOBAL_LIST_INIT(wcCommon, pick(list("#379963", "#0d8395", "#58b5c3", "#49e46e",
 	if(!can_be_reached(user))
 		return
 	TOOL_ATTEMPT_DISMANTLE_MESSAGE
-	if(!I.use_tool(src, user, decon_speed, volume = I.tool_volume, extra_checks = CALLBACK(src, .proc/check_state_and_anchored, state, anchored)))
+	if(!I.use_tool(src, user, decon_speed, volume = I.tool_volume, extra_checks = list(CALLBACK(src, .proc/check_state_and_anchored, state, anchored))))
 		return
 	var/obj/item/stack/sheet/G = new glass_type(user.loc, glass_amount)
 	G.add_fingerprint(user)
diff --git a/code/modules/mob/living/carbon/human/species/slime.dm b/code/modules/mob/living/carbon/human/species/slime.dm
index d9fa1ccbf3c..622e0919b45 100644
--- a/code/modules/mob/living/carbon/human/species/slime.dm
+++ b/code/modules/mob/living/carbon/human/species/slime.dm
@@ -146,11 +146,13 @@
 		return
 
 	var/limb_select = input(H, "Choose a limb to regrow", "Limb Regrowth") as null|anything in missing_limbs
+	if(!limb_select) // If the user hit cancel on the popup, return
+		return
 	var/chosen_limb = missing_limbs[limb_select]
 
 	H.visible_message("<span class='notice'>[H] begins to hold still and concentrate on [H.p_their()] missing [limb_select]...</span>", "<span class='notice'>You begin to focus on regrowing your missing [limb_select]... (This will take [round(SLIMEPERSON_REGROWTHDELAY/10)] seconds, and you must hold still.)</span>")
-	if(do_after(H, SLIMEPERSON_REGROWTHDELAY, needhand = 0, target = H))
-		if(H.incapacitated())
+	if(do_after(H, SLIMEPERSON_REGROWTHDELAY, FALSE, H, extra_checks = list(CALLBACK(H, /mob.proc/IsStunned)), use_default_checks = FALSE)) // Override the check for weakness, only check for stunned
+		if(H.incapacitated(ignore_lying = TRUE, extra_checks = list(CALLBACK(H, /mob.proc/IsStunned)), use_default_checks = FALSE)) // Override the check for weakness, only check for stunned
 			to_chat(H, "<span class='warning'>You cannot regenerate missing limbs in your current state.</span>")
 			return
 
@@ -196,4 +198,4 @@
 
 #undef SLIMEPERSON_HUNGERCOST
 #undef SLIMEPERSON_MINHUNGER
-#undef SLIMEPERSON_REGROWTHDELAY
+#undef SLIMEPERSON_REGROWTHDELAY
\ No newline at end of file
diff --git a/code/modules/mob/living/update_status.dm b/code/modules/mob/living/update_status.dm
index 20cc969119f..d24301b0dd0 100644
--- a/code/modules/mob/living/update_status.dm
+++ b/code/modules/mob/living/update_status.dm
@@ -65,8 +65,14 @@
 	return !(IsWeakened() || paralysis || stat || (status_flags & FAKEDEATH))
 
 // Whether the mob is capable of actions or not
-/mob/living/incapacitated(ignore_restraints = FALSE, ignore_grab = FALSE, ignore_lying = FALSE)
-	if(stat || paralysis || stunned || IsWeakened() || (!ignore_restraints && restrained()) || (!ignore_lying && lying))
+/mob/living/incapacitated(ignore_restraints = FALSE, ignore_grab = FALSE, ignore_lying = FALSE, list/extra_checks = list(), use_default_checks = TRUE)
+	// By default, checks for weakness and stunned get added to the extra_checks list.
+	// Setting `use_default_checks` to FALSE means that you don't want it checking for these statuses or you are supplying your own checks.
+	if(use_default_checks)
+		extra_checks += CALLBACK(src, /mob.proc/IsWeakened)
+		extra_checks += CALLBACK(src, /mob.proc/IsStunned)
+
+	if(stat || paralysis || (!ignore_restraints && restrained()) || (!ignore_lying && lying) || check_for_true_callbacks(extra_checks))
 		return TRUE
 
 // wonderful proc names, I know - used to check whether the blur overlay
diff --git a/code/modules/mob/status_procs.dm b/code/modules/mob/status_procs.dm
index 0aeb9beef84..b61ce171194 100644
--- a/code/modules/mob/status_procs.dm
+++ b/code/modules/mob/status_procs.dm
@@ -173,6 +173,9 @@
 /mob/proc/Stun()
 	return
 
+/mob/proc/IsStunned()
+	return stunned
+
 /mob/proc/SetStunned()
 	return