A girl who is sexually attracted to, and enjoys making out with, nerds. Geek tweakers are generally pretty geeky themselves. (the play legend of zelda, love harry potter, etc;) But they are generally very attractive, despite this odd fetish.
Brohammad Ali: Hey, Man, Who's that girl who plays Legend of Zelda and always always talks about Harry Potter?
Brohatma Ghandi: You mean Bianca?
Brohammad Ali: Yeah! That's her name, man she's hot, I'd like to tap that.
Brohatma Ghandi: Give it it, dude, she's a total geek tweaker.
Brohammad Ali: Goddamn those geek tweakers!