A primate which oddly has opposable digits and some verbal ability. These knuckle-dragging shaven apes are known for their ability to somehow coax or force sexual intercourse with feeble-minded women, often through the use of Rohypnol, alcohol, or other judgement-imparing substances. Often majoring in business or communications, they are oddly absent from class, barely scrape by, and get a job through their fratboy daddy's connections. Fratboy interests include rape, steroids, SUVs, Abercrombie, any music devoid of meaning and taste (including, but not limited to: Jay Z, Nelly, and Dave Matthews), homoeroticism, Natty Light, and whatever Mtv bullshit they readily swallow. Since the names in the Greek alphabet are multisyllabic, they often shorten their designations to grunts. For example "Lambda Sigma" is far too complex for their feeble minds, and it would thus be changed to "Lam Sig" and followed by the obligatory "yo." Fratboys can be identified by their steroid-induced bulk, backwards preworn hats with their Fraternity designations on them, and wardrobe exclusively bought from either Structure, American Eagle, or Abercrombie and Fitch. Fratboys and those women who associate with them should be gassed.
"I'm Drew from delt sig yo. Can I get you a drink yo? Do you like DMB yo? Hey yo, can I spread my filthy, worthless seed yo? The new Jay Z is tight, yo. Please kill me yo."
by dread grey January 10, 2004
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1. A synonym for "rapist"
2. A closet homosexual who feels the need to impress other closet homosexuals by being a faggot and raping drunk girls
3. One who lacks the ability to think and/or act without following a crowd.
Hey, don't be a fratboy, stop raping my sister.

Hey is that an Abercrombie shirt? And hair gel? What are you, a fratboy?

Hey let's go be fratboys and sodomize eachoter.
by Charles Favroth February 20, 2003
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Variation of "fratboy" used in gay chat rooms and gay porno.
Older generous professional, ex frat, in town on business seeks strapped college fratboi(s) for discreet companionship

Fratbois Gone Wild!
by A. Hick July 25, 2006
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n. one who participates in a circle jerk with his frat brothers.

v. to take a drunk lady by force
Help! Someone call the cops, Biff is trying to fratboy me!!
by johnnybgood May 17, 2004
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the orcs that plague the existence of anyone that isn't a fratboy, meaning "fags", "artfags", and open minded people in general. hippies are the arch nemesis of fratboys.
dude, lay low brother. this area is infested with fratboys.
by edonious September 2, 2006
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Better than the average human being. A Fratboy is intelligent, social, athletic and successful. GDI's try to act like they are above fraternities but in reality they are still stuck in high school and dress like middle schoolers and guidos. Fratboys get girls, money, and jobs after college. GDI's get their right hand, a job under a fratboy, and their parents basement for a future home. Minorities also tend to hate fratboys because either A) They can't afford to join a fraternity. B) Even if they could they wouldn't get in.
Guy 1:Dude she totally wants you dick!

Guy 2:No shit, I'm a fucking fratboy and she's a total sorostitue.
by frat-hard February 3, 2010
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a rusty fratboy occurs when you precisely pinch a loaf off into a girl mouth who has passed out as you illegally touch her girl parts, while wearing an upside down backwards visor with spiked jelled hair and a popped collar.
ya last night was awesome man i pulled off the rusty fratboy, that girl will never be the same!
by mr.orfas August 25, 2009
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