An expensive toy, specifically for white, rich boys.
Mike: I just got a two-stroke dirtbike! It was only $9,000 on sale!
Joey: Well I just got a brand-new four-stroke dirtbike for $19,000, what a steal, am I right buddy?!
by dbhate May 3, 2017
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"Dirtbike" refers to the penis of a male who has an unhealthy penchant for anal sex with his female partner. The name stems from the man's desire to ride the female's 'Dirt-Track'. Dirtbikes may also come equipped with "mud-tires" if the female is experiancing diarrhea at the time of intercourse, and "snow-tires" which refers to the male riding the 'dirt-track' after he has previously climaxed in it.
One must exercise caution when using a dirtbike on a fresh track however. The bike must be eased in to ensure that the fresh terrain could be ridden comfortably, avoiding any damage to either the bike and track. The process of "greasing the tires" with some sort of lubricant is probably a smart move for first time riders, and should be seriously considered.
"Adam loved riding his dirtbike in Carrie's dirt-track!"

"Adam loves anal so much that his dirtbike even comes with mud-tires!"

"Adam rode his dirtbike so hard that he got a flat tire!"
by Mister Higgins August 2, 2006
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Instead of motorboating a girl's boobs, you do it in between her ass cheeks.
1)"What would you call a motorboat in between a girl's ass?"
"A dirtbike"
2) "Bro, Claire let me dirtbike her last night!"
3) "Her ass just makes me want to dirtbike her!"
by ThrashMetalAttack July 31, 2016
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DIRTBIKING, to oversteer and slip from the wet stuff, down the dirt track, be sure to put on a helmet, the terrain is rough and tough.
man i went dirtbikin last night, dam that track was tight.
solihull girls love dirtbiking
by DJ_FERNZ October 10, 2006
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This is a sexual act in the same realm as a cleveland steamer . This is when a guy is in a 69 position with a chick, but he is on top. The guy raises the girls legs up in the air like handlebars of a dirtbike, grunts, twists her right ankle and blast out a wet rooster tail of shit splatter all over the chicks breasts and face. Thus, it is like a wide open throttle on a dirtbike, creating a rooster tail of dirt.
Tom: Man, we drank too much Tuesday night and it gave me the beer shits.

Dave: Oh yeah, that's a bummer man

Tom: Yeah, but I put it too good use, I hooked up with Sally and gave her a good dirtbike!!

Dave: Haha, that's awesome!! S
by Dick Delaware December 8, 2011
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"Dirtbike" refers to the penis of a male who has an unhealthy penchant for anal sex with his female partner. The name stems from the man's desire to ride the female's 'Dirt-Track'. Dirtbikes may also come equipped with "mud-tires" if the female is experiancing diarrhea at the time of intercourse, and "snow-tires" which refers to the male riding the 'dirt-track' after he has previously climaxed in it.
One must exercise caution when using a dirtbike on a fresh track however. The bike must be eased in to ensure that the fresh terrain could be ridden comfortably, avoiding any damage to either the bike and track. The process of "greasing the tires" with some sort of lubricant is probably a smart move for first time riders, and should be seriously considered.
"Adam loved riding his dirtbike in Carrie's dirt-track!"

"Adam loves anal so much that his dirtbike even comes with mud-tires!"

"Adam rode his dirtbike so hard that he got a flat tire!"
by Mister Higgins August 3, 2006
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Noun: High speed off-road racing motorcycle. 2 strokes and 4 strokes.
4 stroke dirtbike = GOOD
2 stroke dirtbike = BAAD

Types of dirtbike:
Trailbike, Trials bike, Motocross bike
I jumped my dirtbike 135 feet.
He did a sick whip on his dirtbike
by Mike January 5, 2005
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