A group of kids (mainly high schoolers) about the age of 15 who are sort of "cool", but not not popular. They desperately want to be considered "popular" to the links of sending one of their friends who is at least remotely good looking to date a popular person. If this succeeds, they're automatically in by association. These people normally act like douchebags because they think they're better than the non-popular people. The real popular people, who are nice and friendly, don't see that and fall for their trick.
Girl 1 - "Did you see Maggie with Phil? She thinks she's so popular because her best friend, Kari, is dating him.
Girl 2 - "I know, her and her friends are complete nims."