The rubbing stopped, the hand raised, and I felt Mrs Fellow’s thighs tense as her hand came down hard on my bottom. It stung but not as much as the ...strap on my hands although as spank followed spank so my bottom stung a bit more until the stinging merged as each spank hit me and as they did I felt my pussy press down on Mrs fellow’s lap just as I had felt Jason’s penis press down on my bare legs, spank after spank, time after time. I wasn’t sure but felt Mrs Fellows spank all around my bottom. And groaning... “Oh, Rann, don’t stop ... don’t ... stop ... uhm ... Oh. That feels so good ... Oh, God -- I’m gonna ... gonna ... cum!”“Oh yeah, Rann. The best orgasm I’ve ever had.”The dam had broken and my little sister was writhing and her back was arching up off the bed as I kept my mouth on her, first licking her labia and then putting my lips around her clit and sucking on it.Then I went back to her labia again and thrust my tongue deep inside of her, making her moan even louder. I moved. "It's just an elaborate and thrilling game, isn't it dear?" Yes, it is" I agreed."Yes it is...?" Yes it is Marm." I felt like a fish on a hook, being reeled in slowly."Good girl, and you just want to play at being a little sissy maid for a firm mistress once in a while don't you?" Yes Marm." Maybe she could explain it all to Janice, and make things alright again."And, that device under your skirt, you want your mistress to hold the key and decide when you have been good enough to earn your. This got Lisa thinking even more, her parents would be swingers, who with and how far would they go with the adventure. She felt a warm and damp feeling between her legs and the first flush of sexual excitement arise on her neck.Days later Lisa got up the courage to discuss with Dan what Alison had suggested as a thank you gift for him. Dan enjoyed her obvious embarrassment when raising it and decided to use that if he could. He told her she didn't have to do anything to thank him he helped.