Eat my poop
A dumb way to say you're joking when you're telling a total fake story, and you hope the person you're talking to realizes you're just messing with them.
You tell your friend you got a pet dragon. He believes it. You say, 'Eat my poop!'
Your brother says your dad got a tattoo of a taco. You laugh and say, 'Eat my poop!'
You tell your teacher you’re a time traveler. She says, 'Prove it.' You say, 'Eat my poop!'