Any Motorcycle.
"I got thrown off my crotch rocket doing 130."
by Diego August 17, 2003
any motorcycle with two brake disks on the front wheel.
SUZUKI GSXR see gixxer

look closely at the front wheel of a bike; if it has a brake disk on BOTH sides it can be considered a crotchrocket.
by OnyxO September 04, 2004
people who dont leave their name are too afraid of getting their ass kicked for talking shit about buicks.
And whats with this street legal /not street legal bullshit.
You sound like my grandpa worrying about piddly ass shit laws.
dont you know that cops always go after hot dog bikers first anyway
Hell i drove my car for six months with no muffler or exhaust pipe and the cops never stopped me and dont try to tell me i burned my exhaust valves and sound like you never made it past 5th grade
this cop was chasin me on my crotch rocket and i turned a corner and slipped on some sand and fell and the cop car ran my prep ass over!
Damn am i ever a sperm burpin slarfer
by Anonymous April 09, 2003
any motorcycle that is not classified as a Harley Davidson.
Set: "Look at that guy on that neon yellow crotch rocket"
Lila: "Yeah, he's a hottie"
by Lila & Set December 29, 2003
peice of shit
Dauer962 LM Sport would blow any you bitches away. 0-60 in 2.7 and top speed of 250. man your ass is grass
by some nigga September 24, 2003
when two people sittin on the ground towards each other, one of them takes the others legs and kicks as hard as they can into the others fricken crotch. Hence CROTCH ROCKET !
"hey Gary that was an awesome crotch rocket you gave me yesterday, it felt stingy"
by Jobie Trice February 14, 2005
1. (noun) A motorcycle falling under the class: "sport bike". Traditionally used in motorcycle racing because of their high performance, crotch rockets are instantly recognizable due to the fact that the engine is completely covered by the body of the bike, and the operator looks as though he is "riding a rocket". Visualize a person sitting horizontally on a rocket flying through the air, now imagine that rocket is slowly becoming a motorcycle, but the rider maintains that "rocket riding" position. Now stop using your imagination and you have the visual of a crotch rocket. They're fucking gay. Unless you are using them for racing, you should not be riding one.

Most likely the rider is a complete douchebag who spent too much money on some Japanese piece of shit so he can weave through busy traffic and piss people off. Basically the sole cause of the bad stigma attached to motorcyclists, because of their disproportionally high accident rate and jackass driving habits.
"A Kawasaki Ninja is a crotch rocket."

"Dude I borrowed my buddy's crotch rocket to go to _____________ last week, I went 300 miles in two hours down the interstate. Good thing I didn't hit a rock on the road. Did I mention I cut off at least sixty people and caused three accidents in my wake?"
by dougdougdoug August 17, 2007

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