:pika:

code/modules/reagents/reagent_containers/hypospray.dm

@@ -354,7 +354,7 @@
 	obj_flags |= EMAGGED
 	return TRUE
 
-/obj/item/hypospray/mkii/attack_hand(mob/user, act_intent = user.a_intent, unarmed_attack_flags)
+/obj/item/hypospray/mkii/on_attack_hand(mob/user, act_intent = user.a_intent, unarmed_attack_flags)
 	. = ..() //Don't bother changing this or removing it from containers will break.
 
 /obj/item/hypospray/mkii/attack(obj/item/I, mob/user, params)

code/modules/reagents/reagent_containers/maunamug.dm

@@ -88,7 +88,7 @@
 	user.visible_message("<span class='notice'>[user] inserts a power cell into [src].</span>", "<span class='notice'>You insert the power cell into [src].</span>")
 	update_icon()
 
-/obj/item/reagent_containers/glass/maunamug/attack_hand(mob/living/user, act_intent = user.a_intent, unarmed_attack_flags)
+/obj/item/reagent_containers/glass/maunamug/on_attack_hand(mob/living/user, act_intent = user.a_intent, unarmed_attack_flags)
 	if(cell && open)
 		cell.update_icon()
 		user.put_in_hands(cell)

code/modules/reagents/reagent_containers/syringes.dm

@@ -42,8 +42,7 @@
 	mode = !mode
 	update_icon()
 
-//ATTACK HAND IGNORING PARENT RETURN VALUE
-/obj/item/reagent_containers/syringe/attack_hand()
+/obj/item/reagent_containers/syringe/on_attack_hand()
 	. = ..()
 	update_icon()
 

code/modules/reagents/reagent_dispenser.dm

@@ -79,7 +79,7 @@
 	else
 		. += "There are no paper cups left."
 
-/obj/structure/reagent_dispensers/water_cooler/attack_hand(mob/living/user, act_intent = user.a_intent, unarmed_attack_flags)
+/obj/structure/reagent_dispensers/water_cooler/on_attack_hand(mob/living/user, act_intent = user.a_intent, unarmed_attack_flags)
 	. = ..()
 	if(.)
 		return