Whipped Cowboy

Okay, listen up, buttercup. This joke is funny because it's a play on words. You see, "whipped" can mean to be beaten, like a cowboy might do with a horse, or it can mean mashed, like a potato. And "potato" sounds like "patato," which is how someone might mispronounce "potato" if they have Down syndrome. You are probably familiar with having a disability, so jokes like this should not be new to you.