Someone who flaunts their intelligence in a derogatory manner.
Jeff from marketing: "Yo Bill, I just learned html and made a pretty decent web site. Wondering if you could help me out here."
Bill from software: "Sorry, I can't talk to you until you can write a cross domain AJAX app with geolocation."
Jeff: "Quit being a nerdbag dude."
by coolfire21 September 22, 2010
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Similar to douche bag, only much more polite.
You are being such a nerdbag today dude.
by JHolla September 29, 2006
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(noun)

A) Term used mostly in a derogative way towards someone that radiates nerd.

One who probably:
1. is into anime
2. likes a lot of sci-fi
3. plays World of Warcraft or Dungeons & Dragons on a day-to-day basis
4. goes cosplaying
5. has more than four (4) gaming systems, some of which are not even manufactured anymore
6. trading cards?
etc.
Nerdbag 1: Guys, get ready to attack. Everyone got their special abilities macro'd to their keyboards?
Nerdbag 2: Hold on, I'm out of manna.
Nerdbag 3: Goddamn it!
by Isor April 15, 2007
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(noun)

A) Term used mostly in a derogative way towards someone that radiates nerd.

One who probably:
1. is into anime
2. likes a lot of sci-fi
3. plays World of Warcraft or Dungeons & Dragons on a day-to-day basis
4. goes cosplaying
5. has more than four (4) gaming systems, some of which are not even manufactured anymore
6. trading cards?
etc.
Nerdbag 1: "Dude, what time is it? We might miss the 3 am raid!"
by Isor April 23, 2007
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Sweaty, gross smelling band kids who dedicate their life to marching like ants, or playing dated pop songs at pep rallies. Ones who proudly sport any and all band merch. Dog tags, jackets, t-shirts. They never forget to lube up their instruments, but they always forget deodorant. They carry their instruments with them like trophies while everyone else severely judges them. They're confident in themselves, but they really shouldn't be.
"Those Band Nerdbags are stinking up the gym again!"
"Who left their clarinet in the urinal! Must have been one of those band nerdbags.."
"Look at those band nerdbags playing Confident by Demi Lovato! That song was released in 2015!
by viripien April 16, 2023
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noun: Term for someone who uses bad puns to reference star wars. (or any other pop culture)
Since it is a relatively tame put down, it can be used as a polite way to let your loved ones/friends know that they have crossed a line and should probably stay away from puns forever.
whats for dinner?
wookie steak.
Is it good?
Just a lil chewy.
god you are such a nerdbag.
by lolololoo May 4, 2011
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