From the film school of rock, one of the characters says that he is "not cool enough to be in the band"
This is used in the context that to be in the band is to be in with a group of cool people.
1:Hey have you seen John in collage today?
2:Yer he was over there with all those indies
1:Obviously were not cool enough to be in the band with him.
2:I know, lets go solo.