No longer drop bodyparts still in use

code/modules/mob/inventory.dm

@@ -110,7 +110,7 @@
 	if(!I) //If there's nothing to drop, the drop is automatically succesfull. If(unEquip) should generally be used to check for NODROP.
 		return 1
 
-	if((I.flags & NODROP) && !force)
+	if(!canUnEquip(I, force))
 		return 0
 
 	if(I == r_hand)

code/modules/mob/living/carbon/carbon.dm

@@ -569,6 +569,7 @@ var/list/ventcrawl_machinery = list(/obj/machinery/atmospherics/unary/vent_pump,
 		return 1
 	return
 
+
 /mob/living/carbon/unEquip(obj/item/I) //THIS PROC DID NOT CALL ..()
 	. = ..() //Sets the default return value to what the parent returns.
 	if(!. || !I) //We don't want to set anything to null if the parent returned 0.
@@ -1041,4 +1042,4 @@ so that different stomachs can handle things in different ways VB*/
 
 /mob/living/carbon/proc/update_internals_hud_icon(internal_state = 0)
 	if(hud_used && hud_used.internals)
-		hud_used.internals.icon_state = "internal[internal_state]"
+		hud_used.internals.icon_state = "internal[internal_state]"

code/modules/mob/living/carbon/human/inventory.dm

@@ -105,15 +105,19 @@
 		if(slot_tie)
 			return 1
 
+// The actual dropping happens at the mob level - checks to prevent drops should
+// come here
+/mob/living/carbon/human/canUnEquip(obj/item/I, force)
+	. = ..()
+	var/obj/item/organ/O = I
+	if(istype(O) && O.owner == src)
+		. = 0 // keep a good grip on your heart
+
 /mob/living/carbon/human/unEquip(obj/item/I)
 	. = ..() //See mob.dm for an explanation on this and some rage about people copypasting instead of calling ..() like they should.
 	if(!. || !I)
 		return
 
-	var/obj/item/organ/internal/O = I //Organs shouldn't be removed unless you call droplimb.
-	if(istype(O) && O.owner == src)
-		return
-
 	if(I == wear_suit)
 		if(s_store)
 			unEquip(s_store, 1) //It makes no sense for your suit storage to stay on you if you drop your suit.