Word used to described being hit by a gravity hammer and dying instantly in Halo 3. Word invented by Flawless Wicked and Knockuout21 in a 2v2 game on the second day after halo 3 released.
*died by gravity hammer* Enemy: dude, he got hammerfucked!
by Flawless Wicked October 06, 2007
To have an intense hangover from partying too hard the night before.
Guy 1: Duuuude you look hammerfucked! What did you do last night?
Guy 2: I drank a bottle of tequila last night.. FUCK my head hurts like a bitch.
by OnTheDanceFloor May 31, 2010

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