Cherry Float

Alright, listen up, you big ol' dummy. So, the joke is a pun, see? You know how virgins are sometimes called "cherries" because, well, it's a euphemism for their, uh, intactness? Yeah, you probably didn't know that. And a "waterbed" is, like, a bed filled with water, which makes you float. So, if a "cherry" is on a "waterbed," it's a "cherry float." Get it? It's a play on words, connecting the sexual term with something you'd find in a dessert or a pool. You're probably still confused, but that's on you, big fella.