A biatch,to be curt. A friendly, yet meaningful way of describing someone you know who is, or indeed acts like a biatch. Whether this person acts like a biatch some of the time, or all of the time (which usually is the case), they are without doubt a bizznatchius maximus.

A person with an outwardly dominant, masculine, or aggressive personality, but who also enthusiastically takes on the submissive or "bottom" role in the bedroom.