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1. small penis car
The bigger the car the smaller the penis.
A small penis car is a big car driven by a man trying to overcompensate for having a small penis
2. small penis car
Also applies to humongous "manly" vehicles that are not allowed to wear dirt, let alone get driven on it. Glossy Hummers, pinstriped pickups, and similar macho-but-impractical trucks and SUVs that cruise cities and suburbs.
The Hummer is the most useless vehicle ever built; it's the ultimate small penis car.
3. small penis car
Fancy-ass sports car-type vehicle. Seen driving everywhere, excessively fast, usually with loud and very bad rap or rock music blaring.

These cars are often older models, driven by young men (ages 16-30, usually).
(a white sports car with obscenely large spoiler and 50 cent's "Candy Shop" blaring drives past)

Person #1: Wow, that guy must have the smallest penis in the world.

Person #2: Yes, in fact it may even be a woman who thinks they are a man.
by Yeeaaaaah May 31, 2005 add a video
4. small penis car
a exotic car such as a ferrari or a big SUV such as a hummer used to make up for having a small cock. NOT a muscle car.
*ferrari pulls up to light,revs engine* dude 1: haha,check the fag in the ferrari dude 2: he's gotta be compensating,that's a total small penis car.
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