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4.
V-twin is a type of motorcycle engine, featuring two cylinders, in the form of a V. V-twin engines are most well know for their use in Hardly-Ableson failbikes and Ducati and Buell wanna-be sportbikes. All engines of this type are characterized by a rumbling, glugging sound, with tones that create the impression of imminent disintegration. This is actually not uncommon. Other Characteristics of the V-Twin are incomplete and inefficient combustion, extremely low horsepower per cubic centimeter, high weight, and middle-aged-to older, often obese, riders. They are useful, however, in being the engine in the 2010 Buell Blast, the best V-twin ever. It also provides an engine for inline-4 engines to be much better than.
The new Buells look kinda like sportbikes, but they have V-twins too keep you from getting in trouble.
by tehguyxor October 31, 2009
 
1.
Taking two vyvanse caps
Guy: Dude I just popped a V-Twin.
Other Guy: Damn mon!
by Prismo December 20, 2013
 
2.
When two guys fuck one girls pussy at the same time, while coordinating their thrusting such that when one is moving in, the other is moving out; thus simulating the piston action of a V-Twin motorcycle engine. If the timing is not correct it only qualifies as a DV. It is recommended that only good friends attempt this because getting the timing right can be tricky.
Did you and Dave V-Twin that slut from last night?

No, that motherfucker doesn't have any rhythm. We just gave her a DV.
by Hank_ November 22, 2010
 
3.
when a woman is pleasured by inserting a fist in the anus and vagina and thrusting back and fourth immitating a v twin motorcycle engine.
Dude the best thing happend last night
whats that?
i gave sarah the V TWIN!!!
oh man that chick got wrecked! nice!
by themankiller November 25, 2010