Aborted Baby Logic

Why can't you fool an aborted baby? Because it was not born yesterday.

Explanation

Explain Bear

Listen up, buttercup. This joke is all about wordplay. You see, when someone says you "weren't born yesterday," it means you're not easily fooled. Since an aborted baby wasn't born at all, it REALLY wasn't born yesterday, making it impossible to trick! You are as dumb as the author of this joke. I bet you think a balanced diet is a cookie in each hand.