Being VERY annoying by posting useless or stupid coments to a forum.
reminding everyone how great your computer is every day.
by CorvetteZ0606 June 7, 2003
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To overcomplicate something unnecessarily; to make something take an absurd amount of time
Sam really Neffed that up... It took us 45 min just to order McDonalds.
by Bromatos March 9, 2014
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The act of making plans with someone then not fulfilling the plans you made.
Person 1:Dude are we gonna skate on Friday?
Person 2: Yeah man I'm down anytime!!

-_-_ Friday_-_-
Person 1: Hey man what time are you coming?
Person 2: Dude I can't go
Person 1: ARE YOU SERIOUSLY NEFFING ME RIGHT NOW?? FFFFFFFFFUUUUUUUUUUUUUUU...
by Skate-o-Rama January 20, 2011
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usually found in forums;
somebody who wastes a post with a useless remark or comment just to increase their post count.
POSTED BY: uselessuser

hey yo sups dudes, ..i just took a shit just now! cool huh! ur thoughts?
by dan January 8, 2003
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Neffing is posting on a forum about basically nothing in order to drive up post totals.
An example is replying with only a smiley or one word such as "lol": this causes a lot of useless post. Rules often include - no neffing or you'll have your post count or rank significantly reduced!
by Thresher May 26, 2006
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v. or n.

Much like post whoring, but usually much more comedic and with more of a purpose (I know it's an oxymoron). Created in the AnandTech forums (likely in ATOT).
(to a nef that isn't funny):
Stop posting/BAN!/DIAF, you worthless nef.
by ts3433 March 24, 2005
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Abbreviation to "NOT EVEN FUNNY"

Nef can be used in speech and on internet (forums or chats). A proper moment to to call the word is when someone tries to be clever and fails.
by DjMaCk0k$ June 6, 2011
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