1 definition by cave_man

1.) n. characterized by an unusually large head, so that it is disproportionate to the rest of the body.

2.) n. one who is especially conceited, often insecure, and partakes in what is known as the "e-orgasm", which usually follows CYBERSEX with "a certain fish" on AOL instant messanger
1.) aw man there goes big head
holy shit i swear its even bigger than last time!

2.) dont give her too many compliments on her maternity wear; her head might explode

3.) big head and her boyfriend are out on the playground making vocal love to eachother while playing with themselves
by cave_man April 16, 2007
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