Death Star Destroyer

Alright, listen up, buttercup. This "joke" is about the guy's "dick" destroying the Death Star, right? The Death Star is this big, bad space station from Star Wars that blows up planets. So, basically, he's saying his "dick" is so powerful that it could take down something super huge and destructive. Get it? It's funny because it's ridiculous, and you are too for not getting it right away.