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1.
A vehicle composed of basically an engine, a tank, and a pair of wheels. Often have excellent power-to-weight ratio and heaven sent fuel-consumption.

Not necessarily a sportsbike (refered to as "crotch rocket" by those who can't get their momma to buy them one, or can't get any).

Comes in various forms, from a cruiser (terminator bike), dual-purpose bikes (badass bike, typically used by the villains in a movie, eg: KLR650) to naked bikes (father of the sportsbike, mother of all bikes, eg: Bandit 1200, Ducati Monster).

Unfortunately, sometimes it is operated by attention whores, monkeys, or people with small dick. These are the ones you see riding recklessly on the freeway, often wearing nothing more than a helmet, a t-shirt, and a pair of flip-flops.

Sometimes used as a benchmark for accelaration by ignorant petrolheads, such as that kid driving his mom's civic who thinks he's the shiet when passing one, or that whiny british car journalist.
Bob sees a motorcycle cruising at traffic speed on the highway.

Bob : Look, a motorcycle. I will overtake him to show l33t I am.

Bob overtakes the motorcycle, on the wrong lane, at twice the speed limit, with blinkers off.

Bob : he didn't have a chance. haha. Oh, my dick is 4 inch longer now. w00t.

Motorcyclist who was cruising at 1/8 throttle : Sigh. Poor kid. I guess american education is to blame....
por summerfrost 09 de Abril de 2006
 
2.
Motorcycles are the best form of adrenaline rush because when you get off one you say, "wow i'm still alive!"
My motorcycle keeps my heart healthy.
por gaggdsfsdfasd 18 de Janeiro de 2007
 
3.
A two wheeled hearse. The ultimate chick magnet...bound to get you laid. You will be considered a true outlaw by your friends if you ride one. Just don't get hurt!
Motorcycles are dangerous deathmobiles...but I still own one. It gets me laid everyday...gives me huge amounts of respect...and I spank Honda Civics on the streets and highway like no other.
por sdfasdasd 06 de Dezembro de 2006
 
4.
An attractive girl wearing her hair in pigtails, which you want to grab, use as handlebars, and ride her all night long
Gee, those pigtails on Sarah sure make me want to grab on and ride her like a motorcycle.
por PBK 11 de Maio de 2007
 
5.
A really expensive roller coaster, that kills you when you try and put your hands in the air going down hills.
OH MAN MOTORCYCLES ARE AWESOME!!
*puts arms up the air*
WEEEEEEEE-
OH SH**
por koalla99 05 de Agosto de 2010
 
6.
the act of grabbing the legs of a person like a handle on the motorcyle. and putting the foot on the crotch of that person shaking your leg violently. this will cause soreness of the testicles which will last for at least 2 days

synonym of the word: autobiking
"omg, i watched twilight with my gf, and my friends gave me motorcycle! i cant walk correctly..."

"lets give him a motorcycle! HEY u two, grab his legs and hold him down. *SHAKESSS* AHHHHHHHH HELLPPPPP"
por ericohhh!! 05 de Novembro de 2009
 
7.
Motorcycles are extremely sexy men who make you want to shit yourself. They are seen rarely but the few opportunities you meet a motorcycle you need to get there number! They don't come around often so look closely for that sexy beast coming around the corner.
Alexis: Yooo look at that motorcycles :D
Donna: Damn i want his number!
por lilswimmer3598 30 de Maio de 2011