"So you like this huh?" All I could do was stare.. "Y...yes Sarah" She walked over to me and slapped my ass hard. "Don't you dare call me that. From now on you will call me Mistress and you will be my little sissy slut. Got it?" "Yes Mistress. Sorry Mistress." I said. The feeling of my ass being slapped had instantly made me hers. I could feel my clitty strain against the soft fabric of my thong and I couldn't help but st...