yes

code/modules/arousal/organs/butt.dm

@@ -15,12 +15,6 @@
 	var/prev_size //former size value, to allow update_size() to early return should be there no significant changes.
 	layer_index = BUTT_LAYER_INDEX
 
-/obj/item/organ/genital/butt/on_life()
-	if(QDELETED(src))
-		return
-	if(!owner)
-		return
-
 /obj/item/organ/genital/butt/modify_size(modifier, min = -INFINITY, max = BUTT_SIZE_MAX)
 	var/new_value = clamp(size_cached + modifier, min, max)
 	if(new_value == size_cached)