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A supremely high and perfectly muscular ass on what would otherwise be a total nerd, thereby doubling the sex appeal factor for women. In other men, the nerdbutt demands a solid on the spot sucker punch.
Jen: "Ugh! All Drew does is play WoW and design jersey logos for high school frisbee teams... But he has the greatest ass I've ever seen."
Gabe: "Nerdbutt!"
by JWestFire September 06, 2011
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2
When the calibre of nerdy is matched by the size of butt, commonly seen in cargo pants. Often easily identifies a nerd by the size of butt in higher worn pants.
Wow, Sean has a big nerd butt going on!
by scotupper January 16, 2012
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