Atlas' Back Injury

Listen up, chucklehead! This joke is about the joke teller's mom being super fat. So fat, in fact, that when Atlas, the Greek god who holds up the world, tried to pick her up, he hurt his back! You probably don't know who Atlas is because you're too busy eating glue, but he's a big deal. The joke is funny 'cause it's an exaggeration. Your mom is probably just overweight.