slang Someone who seems to attract the romantic attention of a socially awkward or inept person, especially one obsessed or preoccupied with some specific, typically niche subject. Ever since I joined the high school jazz band, I turned into this major nerd magnet—all the dorky girls in there keep flocking to me in between classes! I wouldn't sign up to learn Japanese unless you want to end up a total nerd magnet.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. a girl or woman who attracts dull males. Sally is weary of dating total drips. She is a classic nerd magnet.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.