1. As a slang term for "an unpleasant person": It's pronounced BOH-gee
2. As a term for a small wheeled carriage or a small, wheeled undercarriage of an aircraft: It's pronounced BOH-gee
3. As a term for a small, insignificant thing or matter: It's pronounced BOH-gee
4. As a term for a type of dance: It's pronounced BOH-gee
5. As a name: It's pronounced BOH-gee
So, basically, BOH-gee is the most common pronunciation.