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 here, buttercup. So, these cows are chatting, right? One's worried about getting "mad cow disease," which is super scary for cows. Then, the other cow drops a bomb by saying it's glad to be a penguin. The punchline is unexpected because penguins can't get mad cow disease, since, duh, they ain't cows! You probably thought milk came from penguins, didn't ya?
Anonymous
Am I missing the joke here?