someone who is not pretty, but good enough to give somebody oral sex.

girl who gives head frequwently to anybody who askes and some that don't

aka whore

An abnormally obnoxious know-it-all, but brainless, individual who always has an answer, or factoid about everything, or "has done that too" but better than you. However, everyone knows better.

girl who gives head to alot of people

A female who enjoys giving oral sex to men and does it well and often.

someone who gives head to anyone at anytime

a girl that sucks so much dick that her head is refered as a bobblehead