Orca
An Orca or is reference to a fat female that hunts males and attempts to sleep with anyone she can no matter how drunk they may be. Just as a real Orca or killer whale would hunt for food. Orcas have been know to even drug a male in order to take them home. Orcas can be similar to a grenade.
Oh man this orca has been creeping on me all night I can't get away from her. If I get drunk don't let me got home with her.