Alternative form of I'm ... year(s) old

Alternative form of I'm rubber, you're glue

(rhetorical question, colloquial, childish) Assertion that an insult made by the party to whom the phrase is directed is actually true of that party, and not of the person using the phrase. Usually considered to be a playground taunt.

An arrogant expression of one's importance.

Alternative form of I know you are but what am I