Sometimes one isn't quite enough. Many promiscuous tramps get bored with the mundane prospect of getting fucked with a single cock. In this case, the best solution is to go full bore...give the slut what she's asking for, but don't stop there. Her needs need to be overwhelmed. Bring in four or five well hung professionals to get the point across. She needs anal satisfaction. She needs her pretty face banged. She needs double penetration. When penetrated in this fashion, the slut will no longer seek anal advancement. The training is over, and the perfect fuck toy is now yours.