If the shoe fits(, wear it).
Prov. An unflattering remark applies to you, so you should accept it. (Slightly rude.) Fred: Hey, Jill, how's your love life? Jill: I don't like busy-bodies, Fred. Fred: Are you calling me a busybody? Jane: If the shoe fits, wear it. Ellen: The professor told me I don't write well! Bill: If the shoe fits, Ellen.