A girl whose MySpace pictures are taken at weird angles (usually black and white) to hide her fatness and/or ugliness. This method is used to attract men just as the actual Anglerfish (Lophiiformes) uses bioluminescence to attract prey.

when you're hungover as shit after a spending a night drunk as a skunk

An anglerfish is a being in which uses angles or a (good side) in photographs to attract another being of the opposite sex.

A couple where the man is very thin and small, and the woman is larger and overweight.

Someone, generally an old (50+) unattractive male, who cruises around young people in their ultra expensive sports car in order to lure them in for a bite, just as the real angler fish entices fish with a tempting worm-like appendage.