The condition which compells men to overcompensate their lack of manhood by overachieving in other areas, bodybuilding, for example.
That guys soo uptight, and mean to all women...
I bet he suffers from small penis syndrome.
by ebony luvr July 12, 2003
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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.
by JimDD March 4, 2006
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A jacked up 4 wheel drive pick up driven by someone who thinks they're much cooler than they really are (see punk-ass bitch), often coupled with an over-sized ego, which both are used to compensate for an abnormally small penis.
Small penis mobiles are often complimented by a Calvin pissing or "Cowboy Up" sticker in the back window.
I heard that dude that drives that small penis mobile got beat up by his little sister.
by Howie Feltersnatch January 2, 2004
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A ridiculously overlifted truck not used for offroading. Identified by having 3' or more of clearance underneath, excessive chrome parts such as steps, grills, cattleguards, wheelwell trim, headache rack, lightbar, rims, smokestacks, a completely spotless or custom paintjob completely bereft of any dust or dirt (belying its entirely non-offroad use), offroad tires, and a trailer hitch dropdown. May also have the brand name spelled out in large decal lettering someone on the truck. Basically a large medical device used to compensate for the infintessimally small size of one's penis.
"Did you see that truck with the 5' lift kit and 30" tires? It didn't have a speck of mud on it, it must be just a small penis rig"
by bitemyshinymetalass December 23, 2009
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A literary device in which a writer inserts a real-life person into their book in a very unflattering way. To ward off a potential lawsuit, the writer gives the character an unfavorable attribute, typically a small penis. That way, the real-life person is unlikely to protest his characterization, because by doing so he would be admitting that he has a small penis.
Shirley had always hated Officer John Lyons, ever since he'd slept with her mother. To get revenge, when she published her latest book one of the minor characters was a man named Officer Jon Lions.

Officer Lions had trouble with the ladies because of his small penis and the fact that he could only stay hard by watching beastiality porn.

Officer Lyons wanted to sue, but couldn't bring himself to do so because everyone on the force would then know he had a small penis.

Once again, the small penis rule worked perfectly.
by Slartibartfast11 March 25, 2011
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