Nothing shuts down an accusation of joke theft faster or in a more embarrassing way than proof that the accuser actually made the joke after the accused. That’s what happened to Bill Maher, who accused The Onion of stealing a joke he made in a standup special. The problem? The Onion published the joke in question six months before his standup special aired.
— So you want to accuse someone of stealing your joke [Splitsider]