The attempts of girls who aren't bi, but pretend to be bi to get more attention from guys, especially evident in their Myspace and Facebook photos where they are kissing / making out with other girls or when they go to parties and clubs and dance provocatively or kiss or make out with girls. They have no intention of doing anything more 'bi' than that or getting into a bi relationship. They are only into attracting attention to themselves.
Guy #1: Is very girl at this club tonite bi?
Guy #2: Hawwwttt!
Guy #3: Nah, they're not bi, they're just bi harder.
Guy #2: Well it's still hawwwttt!
Guy #3: Yeah well good luck getting any, it's all a show.
They won't deliver.