The act of cumming up your partner's nostrils after anal copulation. Term derives from the sound one makes after breathing in the cum
(Example) - 'breathes in',"NERF! SHNARF! COUGH! COUGH!
(Example) - 'breathes in',"NERF! SHNARF! COUGH! COUGH!
"So I was with this chick and she thought I was gonna cum on her face, but I totally nerfed her and she gagged..It was sweet."
by PEERC February 26, 2010

Comes from star wars, "nerf-herder" meaning some one that cleans S***, often adopted in MMORPGS for things being made worse
by Alucart July 29, 2004

A term used if you play World of Warcraft when the newest patch took a feature away from the gameplay. The most recent nerf was the night elf cat mount, which doesn't roar when you press the spacebar any more.
Player 1: dude, they nerf'd the cat mount roar!!!
Player 2: ...whut!? NOWAI!!!1
---
Player 1: omg they've gotta nerf the fact that dr00ds can dismount their flying mount and pop into flight form lyke that
Player 2: yarly
Player 2: ...whut!? NOWAI!!!1
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Player 1: omg they've gotta nerf the fact that dr00ds can dismount their flying mount and pop into flight form lyke that
Player 2: yarly
by Smartass v2.0 May 21, 2008

"No repercussions fuck"
The type of relationship you want with a sexual partner you're never going to see again.
The type of relationship you want with a sexual partner you're never going to see again.
Rick: Hey man, would you do Paris Hilton?
Jake: Man that bitch is nasty. But I'd probably still nerf her.
Jake: Man that bitch is nasty. But I'd probably still nerf her.
by gaf2011 June 19, 2008

by bumdharma July 30, 2013

"haha, i just nerfed the bumper on your truck brah"
dude 1: "remember that chick Ashley from that party last night?"
dude 2: "The one with the big tits?"
dude 3: "yahh, I nerfed her with my dick...or cock!"
dude 1: "remember that chick Ashley from that party last night?"
dude 2: "The one with the big tits?"
dude 3: "yahh, I nerfed her with my dick...or cock!"
by tacofab November 22, 2009
