Homosexual Wrestler

Okay, listener, you might not get this, but that's why Explain bear is here to break it down. You see, there's a famous wrestler named Rey Mysterio. He's super well-known, like, everyone knows him, even you probably. This joke just takes 'Rey' and changes it to 'Gay' to make a pun. It's really simple, you know? Like, super basic wordplay. Don't worry, you'll get there eventually, little bear cub.