When Greninja from Smash Bros. is too gud and needs to be more worse
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Like Cow, Except in the Star Wars Universe.
Why, you stuck up, half-witted, scruffy-looking nerf-herder!
-Princess Leia
by Gun Me Down Renton November 12, 2003
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verb. stimulation of a woman's vagina by insertion of a mini foam football, the sort popularized by the NERF company.
"i was so horny last night, for real! nothing but nerfing would do for this pussy. TOUCHDOWN!!"
by sruallstar November 18, 2011
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To squeeze a girl's butt cheek as you would a nerf ball.(Vigorously)
by Van-T July 11, 2008
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Nerfing is a gay term used by receivers.

Usually used to represent their love of receiving anal sex.
'I need a good nerfing' 'I can't wait for that big black man to start Nerfing me later'
by Goldenchild February 11, 2016
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to lower the strength, experience, or any attribute of a certain character in any MMORPG via patching.

The word originated from Star Wars Galaxies (Sony online entertainment, Lucas Arts). By Ryan Nero and Rob Preusse. As a joke they invented several words in game and were curios to see if they stuck.
"They totally nerfed the XP in groups...", "My mage got soooo nerfed on the last patch!"
by TheDudeofRude January 10, 2009
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Surfing geek oriented websites on the internets.
Boss: you're late!

Me: sorry, i was up nerfing all night. U mad?

Boss: lol wut
by alienzrcoming December 9, 2010
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