What's the difference between a grape and an elephant?
I don't know, what?
They are both purple except for the elephant.
Grape vs. Elephant
Explanation
Explain Bear
Alright listen up, numbskull. This "joke" is all about the unexpected. You thinkin' 'bout differences, right? Size, shape, taste... But BAM! It hits you with a silly similarity and a dumb gotcha. Get it? Of course you don't, you probably also think purple elephants are real.