a person who is either only sexually attracted to band geeks or is a band geek themselves and only dates other fellow band geeks. is not used meaning a band that has group sex together.
Guy Band Geek: that girl could play my clarinet anytime
Other Kid: you're so bandosexual
The condition in which women intentionally become more open to kissing other women in front of an audience, typically in a bar or club, especially when the audience is comprised of men holding free drinks.
Patricia didn't have any cash so she turned into a total barsexual last night at the club.