when one becomes instantly sexually aroused by something nerdy. this includes video game content, anime, cosplay outfits and costumes, and nerdy tattoos.
Neville: Dude, my girlfriend sent me a picture of her in her new costume... when I saw tabbie dressed as sexy Luigi I got such a nerdboner I had to go bust a nutt in the shower
Sam: Thats so fucking Nerdy!!
Neville: I got so turned when I thought about getting me a mario costume and fucking Luigi tabbie...
Sam: What the fuck?! Isn't that kind of gay dude..