Girl 2: Yeah, but your LBF is showing, they're more like denim underwear.
An acronym that pokes fun of the recent outing of Lance Bass, the deep-voiced member of the defunct boy band *nsync. This phrase is most commonly used as a joke among male friends, and can be compared to phrases like "fairy", "pansy", "fruitcake", or even "gaylord." Why just call your friend a "fag" when they can be an LBF?
C'mon, dude, you can take another shot! What are you, an LBF or something?