some hints

code/game/objects/structures/bedsheet_bin.dm

@@ -65,6 +65,13 @@ GLOBAL_LIST_INIT(double_bedsheets, list(/obj/item/bedsheet/double,
 	if(bedsheet_type == BEDSHEET_DOUBLE)
 		stack_amount *= 2
 		dying_key = DYE_REGISTRY_DOUBLE_BEDSHEET
+		register_item_context()
+
+/obj/item/bedsheet/add_item_context(obj/item/source, list/context, atom/target, mob/living/user)
+	. = ..()
+	if(iscarbon(target))
+		LAZYSET(context[SCREENTIP_CONTEXT_LMB], INTENT_ANY, "Prepare Surgery")
+		return CONTEXTUAL_SCREENTIP_SET
 
 /obj/item/bedsheet/attack(mob/living/M, mob/user)
 	if(!attempt_initiate_surgery(src, M, user))