Why can't you fool an aborted baby?
Because it wasn't born yesterday.
Why can't you fool an aborted baby?
Because it wasn't born yesterday.
Listen up, buttercup. This joke implies that an aborted baby cannot be fooled because it hasn't been born yet. The punchline plays on the expression "born yesterday," which means easily deceived. It's funny because it's dark and morbid, just like your sense of humor, I guess.