A person of professed homosexual identity who when under the influence of drugs or alcohol will be sexually intimate with an opposite cisgender partner. During sober interactions, the tequila bisexual will flatly deny any heterosexual attraction. This situation is caused by people who insist that someone must "choose a team" or that bisexuality isn't a legitimate sexually identity. It is the opposite of a two beer queer
John's boyfriend Marcus was drinking margaritas last night and ranting about how bisexuals need to pick a side. Guess who he made out with after? Erin!!! He is such a tequila bisexual.