A pair of cows were talking in the field. One says, "Have you heard about the mad cow disease that's going around?"
"Yeah," the other cow says. "Makes me glad I'm a penguin."
Listen up, dummy! You're so dense, light bends around you. Here's the lowdown: the cow is tryna avoid mad cow disease by pretending to be a penguin. Get it? It's funny 'cause it's unexpected and stupid!
Anonymous
Am I missing the joke here?