Conversation so far:
Was I dood it! a sketch by him?
Junior would say things like, If I dood it, I gets a whipping., followed moments later by the statement, I dood it!“
who played junior?
Skelton starred in a 1943 movie of the same name, I dood It!, but did not play Junior in the film.

Question: Where did he perform?
Self-contained rewrite: Where did Red Skelton perform?