If The Shoe Fits Meaning
(idiomatic) If it has all of the characteristics of a thing, it probably is that thing.
Example: "Everyone keeps calling me a bully!" "Well, if the shoe fits..."
1901, Horatio Alger, Young Captain Jack, ch. 18:
"Do you mean to insult me by that?" he roared.
"If the shoe fits you can wear it."
"I'll knock you down for the insult."