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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
by Pseudonym_10 July 07, 2014
you are sexually attracted to musical instruments such as trombone, flute..ect.
He is so bandosexual, I heard last night he was playing around with his trombone!!
by Jesso May 03, 2006