Similar to Hit it and Quit it.
It refers to getting a girl knocked up and leaving quick like a rocket.
I just met this chick at the supermarket. I'm going to KNOCK IT AND ROCKET.
3👍 1👎
1. when having sex with your girlfriend on a couch and you fall off
2. when engineers at NASA drop the rocket when moving it on the couch platform
dood last night i accidently knocked the rocket off the couch.