1. When the developers of an MMORPG (like WoW) weaken a certain weapon to balance the game.

2. Airsoft for children.
1. They nerfed the sword of sparks. Now, the shuriken does more damage.

2. Vitos ten year old son enjoys playing nerf
by awebsdyutyhtgykjesry January 9, 2012
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1. A toy made by Hasbro Starting in the 1970's. (in 1969 they had a foam ball) nerf guns in the 70's shot foam balls, now they shoot foam darts.

2. To decrease one's power in video games because one is too overpowered.
1. Ryan: Hey Tom, im going to have a nerf war, wanna come?
Tom: Sure!

2. Dude the Ray Gun was AWESOME in Black Ops 1. Now in Black Ops 2 they nerferd it. now it cant do shit.
by Epicryan158 September 16, 2013
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Any change to a game element that makes it considerably less powerful or desirable.
Floyd: Don't put the Nerf on my team, just to try and slow me down.

Beth: Oh, come on im good *Shoots self in head*.
by qwerty96 July 3, 2012
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When Greninja from Smash Bros. is too gud and needs to be more worse
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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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