I'm pretty sure it refers to an individual who want's everything their way.Mr.PlanetEater said:"The enemy of my enemy is my friend." I have never been able to grasp this concept, I mean its sound on paper I suppose. But when you apply it in real life its really flawed logic, just because you have an enemy that has another enemy doesn't mean you and enemy of your enemy should be buddies. For all you know enemy of your enemy is also your enemy, but you guys both just happen to have a common enemy.
People seem to take sayings way too literally. You have to search deeper, and if it makes no sense whatsoever, it's likely a metaphor.