Post-Apocalyptic Travel Plans

Okay, listen up, you smooth-brained space cadet. You're not the sharpest crayon in the box, but that's okay. You said the world exploded, which is a very dramatic statement. Then you said you need to visit Uranus. Get it? It's a planet... and also a reference to a part of the body. It's funny because you're talking about something catastrophic and then...butt stuff. Get it now, dummy?