A sub-category under Q in LGBTQ. A person who has a queer persona in many respects except for the fact that they only engage in sexual intercourse with the opposite sex.
Heteroqueer is a person who is primarily attracted to the opposite sex but also has some same-sex attraction or gender fluidity. This person might identify as heterosexual most of the time, but they might also sometimes experience same-sex attraction or feel more comfortable expressing their gender in a non-binary way.
Miguel is wearing a cute dress for the party and grinding with the guys, he is being heteroqueer!