When someone does something big that turns out to be a disappointment, like a shitty plastic rocket that goes into the air only to turn out into nothing.
Jerry's date with Tiffany turned out to be a plastic rocket.
Argentinian slang for penis
Mister Rocket's ready to launch!
Can be used to describe someone you'd normaly call a cunt-prick-or twat, infront of more sensative people, children not used to street banter and old people that mite not understand more modern cussing, blaggard and bounder are ok,but cunt's still got the edge in my opinion, knob rocket can be an ice breaker, once the subject is used to your silver tounged urban banter, you can ease them into more progresive cussing.
Dont listen to that knob rocket! He's an arrid banquet (one up from a drylunch.)
a clot rocket is a girl who PMSes really badly on her period
“Jesus, Izzy, don’t be such a clot rocket.”
When you suck ass at Rocket League
Person 1: I'm so good at Rocket League
Person 2: Nah you are a Rocket Rookie
When a girl is riding your cock so hard and fast that you can't get her off in time before the big purge. So you kick her in the air right as you're about to cum.
I didn't want no kids so I gave her the ol' Tuesday Rocket
A person who is dumb without explanation
This kid is a right ol' Nod Rocket!