diff --git a/code/modules/mob/living/simple_mob/simple_mob_vr.dm b/code/modules/mob/living/simple_mob/simple_mob_vr.dm
index da2017b34c5..7c5fda0680a 100644
--- a/code/modules/mob/living/simple_mob/simple_mob_vr.dm
+++ b/code/modules/mob/living/simple_mob/simple_mob_vr.dm
@@ -57,8 +57,7 @@
 // Release belly contents before being gc'd!
 /mob/living/simple_mob/Destroy()
 	release_vore_contents()
-	if(prey_excludes)
-		prey_excludes.Cut()
+	LAZYCLEARLIST(prey_excludes)
 	return ..()
 
 //For all those ID-having mobs
@@ -113,7 +112,7 @@
 	if(!M.allowmobvore || !M.devourable) // Don't eat people who don't want to be ate by mobs
 		//ai_log("vr/wont eat [M] because they don't allow mob vore", 3) //VORESTATION AI TEMPORARY REMOVAL
 		return 0
-	if(M in prey_excludes) // They're excluded
+	if(LAZYFIND(prey_excludes, M)) // They're excluded
 		//ai_log("vr/wont eat [M] because they are excluded", 3) //VORESTATION AI TEMPORARY REMOVAL
 		return 0
 	if(M.size_multiplier < vore_min_size || M.size_multiplier > vore_max_size)
diff --git a/code/modules/mob/living/simple_mob/subtypes/vore/pakkun.dm b/code/modules/mob/living/simple_mob/subtypes/vore/pakkun.dm
index 00c4e697bef..1fb26ea1b51 100644
--- a/code/modules/mob/living/simple_mob/subtypes/vore/pakkun.dm
+++ b/code/modules/mob/living/simple_mob/subtypes/vore/pakkun.dm
@@ -109,7 +109,7 @@
 			continue
 	if(istype(holder, /mob/living/simple_mob))
 		var/mob/living/simple_mob/SM = holder
-		our_targets -= SM.prey_excludes
+		our_targets -= SM.prey_excludes // Lazylist, but subtracting a null from the list seems fine.
 	return our_targets
 
 /datum/ai_holder/simple_mob/ranged/pakkun/can_attack(atom/movable/the_target, var/vision_required = TRUE)
@@ -120,14 +120,14 @@
 			return FALSE
 		if(istype(holder, /mob/living/simple_mob))
 			var/mob/living/simple_mob/SM = holder
-			if(L in SM.prey_excludes)
+			if(LAZYFIND(SM.prey_excludes, L))
 				return FALSE
 	else
 		return FALSE
 
 /mob/living/simple_mob/vore/pakkun/on_throw_vore_special(var/pred, var/mob/living/target)
-	if(pred && !extra_posessive && !(target in prey_excludes))
-		prey_excludes += target
+	if(pred && !extra_posessive && !LAZYFIND(SM.prey_excludes, L))
+		LAZYSET(prey_excludes, target, world.time)
 		addtimer(CALLBACK(src, .proc/removeMobFromPreyExcludes, weakref(target)), 5 MINUTES)
 	if(ai_holder)
 		ai_holder.remove_target()
@@ -151,8 +151,8 @@
         user.visible_message("<span class='info'>[user] swats [src] with [O]!</span>")
         release_vore_contents()
         for(var/mob/living/L in living_mobs(0))
-            if(!(L in prey_excludes))
-                prey_excludes += L
+            if(!(LAZYFIND(prey_excludes, L)))
+                LAZYSET(prey_excludes, L, world.time)
                 addtimer(CALLBACK(src, .proc/removeMobFromPreyExcludes, weakref(L)), 5 MINUTES)
     else
         ..()
diff --git a/code/modules/mob/living/simple_mob/subtypes/vore/zz_vore_overrides.dm b/code/modules/mob/living/simple_mob/subtypes/vore/zz_vore_overrides.dm
index 5744f8cccbc..fbc3830ca47 100644
--- a/code/modules/mob/living/simple_mob/subtypes/vore/zz_vore_overrides.dm
+++ b/code/modules/mob/living/simple_mob/subtypes/vore/zz_vore_overrides.dm
@@ -188,10 +188,10 @@
 /* //VOREStation AI Temporary Removal
 /mob/living/simple_mob/animal/passive/cat/fluff/EatTarget()
 	var/mob/living/TM = target_mob
-	prey_excludes += TM //so they won't immediately re-eat someone who struggles out (or gets newspapered out) as soon as they're ate
+	LAZYSET(prey_excludes, TM, world.time) //so they won't immediately re-eat someone who struggles out (or gets newspapered out) as soon as they're ate
 	spawn(3600) // but if they hang around and get comfortable, they might get ate again
 		if(src && TM)
-			prey_excludes -= TM
+			LAZYREMOVE(prey_excludes, TM)
 	..() // will_eat check is carried out before EatTarget is called, so prey on the prey_excludes list isn't a problem.
 */
 
@@ -246,4 +246,4 @@
 		B.digest_mode = safe ? DM_HOLD : vore_default_mode
 
 /mob/living/simple_mob/animal/passive/mouse
-	faction = "mouse" //Giving mice a faction so certain mobs can get along with them.
\ No newline at end of file
+	faction = "mouse" //Giving mice a faction so certain mobs can get along with them.
diff --git a/code/modules/vore/eating/living_vr.dm b/code/modules/vore/eating/living_vr.dm
index f8431fa3831..83384066eb4 100644
--- a/code/modules/vore/eating/living_vr.dm
+++ b/code/modules/vore/eating/living_vr.dm
@@ -493,7 +493,7 @@
 		muffled = FALSE		//Removes Muffling
 		forceMove(get_turf(src)) //Just move me up to the turf, let's not cascade through bellies, there's been a problem, let's just leave.
 		for(var/mob/living/simple_mob/SA in range(10))
-			SA.prey_excludes[src] = world.time
+			LAZYSET(SA.prey_excludes, src, world.time)
 		log_and_message_admins("[key_name(src)] used the OOC escape button to get out of [key_name(B.owner)] ([B.owner ? "<a href='?_src_=holder;adminplayerobservecoodjump=1;X=[B.owner.x];Y=[B.owner.y];Z=[B.owner.z]'>JMP</a>" : "null"])")
 
 		if(!ishuman(B.owner))
diff --git a/code/modules/vore/eating/simple_animal_vr.dm b/code/modules/vore/eating/simple_animal_vr.dm
index f9744d8ac73..680e6501136 100644
--- a/code/modules/vore/eating/simple_animal_vr.dm
+++ b/code/modules/vore/eating/simple_animal_vr.dm
@@ -1,7 +1,7 @@
 ///////////////////// Simple Animal /////////////////////
 /mob/living/simple_mob
 	var/swallowTime = (3 SECONDS)		//How long it takes to eat its prey in 1/10 of a second. The default is 3 seconds.
-	var/list/prey_excludes = list()		//For excluding people from being eaten.
+	var/list/prey_excludes = null		//For excluding people from being eaten.
 
 //
 // Simple nom proc for if you get ckey'd into a simple_mob mob! Avoids grabs.
@@ -86,17 +86,16 @@
 			user.visible_message("<span class='info'>[user] swats [src] with [O]!</span>")
 			release_vore_contents()
 			for(var/mob/living/L in living_mobs(0)) //add everyone on the tile to the do-not-eat list for a while
-				if(!(L in prey_excludes)) // Unless they're already on it, just to avoid fuckery.
-					prey_excludes += L
+				if(!(LAZYFIND(prey_excludes, L))) // Unless they're already on it, just to avoid fuckery.
+					LAZYSET(prey_excludes, L, world.time)
 					addtimer(CALLBACK(src, .proc/removeMobFromPreyExcludes, weakref(L)), 5 MINUTES)
 	else if(istype(O, /obj/item/device/healthanalyzer))
 		var/healthpercent = health/maxHealth*100
-		to_chat(user, "<span class='notice'>[src] seems to be [healthpercent]% healthy.</span>")		
+		to_chat(user, "<span class='notice'>[src] seems to be [healthpercent]% healthy.</span>")
 	else
 		..()
 
 /mob/living/simple_mob/proc/removeMobFromPreyExcludes(weakref/target)
 	if(isweakref(target))
 		var/mob/living/L = target.resolve()
-		if(L)
-			LAZYREMOVE(prey_excludes, L)
+		LAZYREMOVE(prey_excludes, L) // It's fine to remove a null from the list if we couldn't resolve L