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18.
1) a sport bike.
2) a male erection.
1) I think i'm gonna save up my money and buy a crotch rocket next summer.
2) I can't stand up until i get rid of this crotch rocket.
by the saskatchewan stud muffin January 23, 2007
 
36.
something between your nuts and thigh that goes the speed of fuckin sound plus 5.
SOB my R1 fuckin smokes a Le Sabre with stage 4 heads and no muffler exhaust sport version driven by Arkansas original inbred
by Poop for the bears October 27, 2003
 
37.
A girl who is exceedingly good at kicking men in the nuts. A crotch rocket is usually a petite girl, from size 4'10'' to 5'4''. Because of their height, they have a small shoe size, which enablems them to get their foot into prime nut busting position.
"Holly crap dude, Sarah is such a crotch rocket!"

"I know I hate it when she gives me the shoe!"
by Ryan Mac 13 April 28, 2007
 
38.
An unstoppable and powerful erection
I have a crotch rocket from looking at my sister
by des, AKA the jazz man January 05, 2007
 
39.
A Motorcycle that goes really fast and shocks all the guys when they realize that it was a chick that just blew them away!
"If You Can Read This The Bitch Just Passed Your Ass!"
by Kristy January 17, 2004
 
40.
fast motorcycle . . wheelies allot . . .
suzuki hayabusa
by sandguy April 04, 2003
 
41.
If you like slutty chicks, then you'll get one.
Crotch rockets are for wiggers.
by SLAYER OF YOUR MOM October 11, 2005
 
42.
Except the DAuer Lemans:

a. Costs more than your life.

b. Sucks up way more gas

c. looks like a big banana

d. Is still not as fast as the best crotch rockets.

Crotch rocket: a two wheeled vehicle powered by a high rev motor, usually built to outperform any other vehicle including ability to kill the operator of the vehicle instantly.
by jereh jamis October 10, 2003