Older mans' name for his car, or sometimes cane or walker. It's the thing that gets him around. Thought to be a derivation of a name originally referring to a horse.
Andy heard a buzzing sound coming from his sister's room. When he opened the door, he saw his sister masturbating with a dildo making a 'bzzzzzz' noise. "You're a fucking beesexual," Andy said in disgust.