What do you call a fat man that has a stomach shaped like an egg?
Humpty Dumpty!
Okay, listen up, buttercup. You see, the joke is that this fat dude's belly is shaped like an egg, right? And Humpty Dumpty is a big egg dude from a nursery rhyme. Get it? It's funny 'cause the dude is shaped like Humpty Dumpty. Now go back to drooling on yourself.