It may have been fast and erratic, but<em>damn</em>if her butt wasn't getting reamed good!  Harper's cock was slapping her belly with each thrust, and she was moaning more whorishly than the whore fucking her up the ass like a cock-craved slut...<br/><br/>She sometimes wondered why she WAS NOT a high-class butt-slut of a whore...<br/><br/>Then, she realized, she kind of WAS sometimes!  And then she smiled wider as she felt the lovely stinging of her buttocks from Sammie's hips on her modified body.<br/><br/>"Oh fuck!  Harder!  Spank me!  Show me off girl!" Harper demanded, before reaching back and roughly smacking her own ass-cheek. "Please!  I'll let you blow it all over me just make it<em>dirty</em>!"