(n) a straight guy who is considered VERY attractive by homosexual guys--so much so that many will openly flirt with him. frequently the fagnet will get more attention from men than from women and subsequently feel like he would have better luck on the dating scene if he were in fact gay.
etymology: combination of the words "fag" and "magnet"
guy 1: i don't like this bar. tonight, 3 girls have told me to drop dead and 4 dudes have smacked me on the ass. that's like a negative track record.
guy 2: dude, you're just a fagnet.