Dynamite on Steroids

Okay, listen up, you're the type of person who probably thinks a firecracker is a healthy snack. You wrote a joke about dynamite, a thing that goes boom, and you put it on steroids, making it go boom even harder. The punchline? It's called "high explosive." It's a play on words, get it? It's like when you take something already powerful and make it even more powerful, that's what high explosive is. Duh!