Moron, knucklehead, asshole, thug, drunk, drug addict, jerk and all-around loser. And, not to insult gays, probable closeted homosexual.
Usually small-town boys that can't deal with a big city/big school and insulate themselves so their boorish behavior can be reinforced as they self-congratulate one another. Budding alcoholics and drug addicts that care more about maintaining a steady source of their high than the fact that everyone laughs at them behind their backs. Along these same lines, boys who brag about throwing up, blacking out and passing out -- as if they were skill sets. Are usually unable to recall the last time they were laid when (a) they were not falling down drunk and (b) the woman stupid enough (or passed out enough) to engage in sex with this moron wasn't drunk.
No -- Frat Boy
2.) The same neanderthalistic douchebags that used to play high school football and talk about how shitty you were in high school who now joined a homoerotic club so they can rape each other's ass in private.
3.) A collection of date-rapists that like to drink shitty beer and "stick it in" passed out drunk girls.
4.) Scum of the earth.
5.) A collection of the people with the smallest penises on a college campus.
1) caucasian ethinicity
2) sleeveless t-shirts
3) inane, misogynistic babble
4) the ginormous SUVs (usually F-150s or Suburbans) with jacked-up wheels they drive, especially with stereos blaring rap or metal
5) visors, especially if worn upside-down, backwards, or a savory combination of the two
6) excessive use of the word "faggot"
7) possession of 40 oz beers, cigarettes, marijuana, and/or beer kegs (full-size or pony). especially alcohol stolen from the local grocery store (see beer run).
8) membership in a fraternity. (optional)
Origin: "frat" from fraternity, a kind of college social club/residency hall.
"dude some drunk fuckin frat boy threw a rock at my car on the way over here."