A well trained ass is what Mistress wants, so that's what she must get!
She has her well trained ass ready and waiting to take a pounding for her in the dungeon. 
But this time after each pounding the slave must clean the cock with his mouth for Mistress and be a dirty little ass to mouth slave! 
Watch as she plunges her cock deeply down his throat after each pounding of his ass!
Mistress will continue to train you to be a good vessel for Her mighty cocks!
In your ass and your mouth you'll take it... and you'll be greatful of the honour!