A lesbosexual is someone who is attracted exclusively to lesbians. This person can be male or female. Generally lesbosexual males are guys who have a thing for women whom they can't have. Lesbosexual females are just lesbians who don't like straight girls.
Facetious term for lesbians. Used prominently by comedienne Judy Tenuta in the album title: AttentionButt Pirates and Lesbeterians. The word sounds similar to the Protestant Presbyterian sect, reinforcing the idea of describing a distinct in-group.
We were halfway through our appetizers before we realized that everyone else in the restaurant seemed to be Lesbeterians.