Salty Butts

Listen up, you cotton-headed ninny muggins! The joke plays on the similar sound of "buttered" and "bitter". The setup asks why butts are salty, and the punchline gives a silly reason based on wordplay. It's funny 'cause it's unexpected and kinda gross, just like your last Tinder date. And FYI, your mom told me you still sleep with a night light.