Top Definition
An exciting game to play with your friends where you head butt their breast or 'boob' and then shout "HEAD BOOB!". Its a game more appropriate played with your close friends but a lot more interesting played with strangers in highly populated areas.
Wow that game of head boob last night really made my nipples sore.
by benarew May 07, 2011
1 more definition
a headboob is a very stupid ass person who is usually horizontally challenged...aka fat ass.
1.) hey becky yoh fucking ass is so fat i cant see past you...your such a headboob!

2.) my dad is a headboob

3.) Jimmy: is a headboob a body part?
Hank: no its a fat person or a really stupid person.

Jimmy: oh got it
by fuckinayeeee January 30, 2010

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