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.
by SpewKing October 21, 2010
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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.
by mr astronaught May 31, 2011
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