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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."
fratboy 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.
fratboy by Charles Favroth June 10, 2006
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!!
fratboy by johnnybgood June 10, 2006
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.
Fratboy by frat-hard February 3, 2010

fratboy country music 

"Pop" music played on new country radio stations that is sung (not written) by artist who wear skinny jeans, tight V-necks, and other similar "frat-like" clothes who decide to throw on a pair of fancy boots and a fancy looking cowboy hat and call themselves country singers.
Thomas Rhett is a prime example of fratboy country music. His pop song crash and burn came on a country radio station, I puked a little in my mouth and immediately had to play some Jamey Johnson to ease the pain.
fratboy country music by zx04 October 13, 2016

Fratboy Shaman

An arrogant, douchey concert-goer usually in a pack, that's sole purpose of attending an event is to consume as many drugs as possible in an attempt to surpass everyone else who are just enjoying the otherwise meaningless hole in the wall club and non named local riddim DJ. Usually Fans of Bassnectar, Excision, Disco Biscuits and to a lesser extent Dead and Co with Johnny Salami, Space Jesus.
Hey, Check out the "Fratboy Shaman" over there! Haha buddy just ate 3 tabs of fluff, a half of a yellow Ikea and smoked a $30 of crack , what is he trying to become a wizard?
Fratboy Shaman by LotDaddy June 14, 2018

rusty fratboy 

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!
rusty fratboy by mr.orfas August 24, 2009
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x:"Girl your fit chewed today!"
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