Attack from behind. A pulling technique to be used in nightclubs. Approach you female target from behind and start sleasing all over her before she's even seen you. There are two variations:
UAFB - Univited attack from behind as described above.
IAFB - The girl first indicates that your advances are welcome/backs into you.

Ass Face Boy. A person who is so ugly that their face looks like their ass.

The most recent definition:

Acronym for A Fabulosexual Brother. A brotherhood consisted of members such as ksj and jyk.

away from browser
doing something other then starring at your internet window.

Adult male who still thinks he’s big man on campus even though he’s pushing middle age and is old enough to be a father of college kids. Wears Vineyard Vines, belongs to a country club, golfs, drinks bourbon on the rocks, drives an expensive car, loves monograms, attends all alumni functions, lives in a McMansion, wears undergrad colors and gear, and generally can’t get over himself and his frat bros. Cares about appearances, pedigree and social status. Few female or minority friends. Republican.

Asian Frat Boy

AFB means "away from brain", it is similar to AFK (away from keyboard) and is often used as an excuse for not listening to someone