" She reluctantly said "(FIL) will be back any minute no." So I said "we better be quick then... I bet (SIL) would do it especially with her BF gone."...fter a couple mins of going back and forth my MIL got up to get some more wrapping paper. When she didnt come back right away I went to see what was taking her. When I walk into laundry room I see her in a bra and thong, trying to find something to wear in the dryer. The view was priceless. I came behind her cock in hand and snuck it between her. "I think I'll wait until a see a big truck coming the other way" she said quietly,"And I'll drive towards it" Sorry?"Behind me Sarah giggled, leaving me with the distinct impression that I was missing something."And just before it smashes into us, I'll ask you what it is, you have to tell me" she continued,"Or maybe I'll just carry on driving until I find a cliff to drive over instead"Sarah leaned forward and laughed,"Jamie, we both love you to bits, you know that, but honestly at this kind of. " I felt the tingles moving through me asI mouthed the words, "Yes, Mistress."I came out of the bathroom and sat down on the bed and extended myhand to him. He reached out and I could see him take note of my hugering."So," I said. "I'm here for you. Ask me anything."He looked around and then thought of something. "I don't know...doyou miss peeing standing up?"I giggled. "No! I love sitting down to pee. It's....girly." Yeah. I sometimes do it....just to do it," he admitted."How long. "Mmmmmm, Laura," I said, "I didn't think we'd get a chance this weekend. You sure we have time before they get back?" Wait, WHAT?!?" came a voice from under the comforter as the blowjob stopped.My blood ran cold. That sure as HELL was not Laura's voice. Had I misjudged things and it actually was my wife? No, I thought, that wasn't her voice either…The comforter lifted up and I saw Erica's face in shock. She said, "You've been fucking LAURA?!?"I laid there looking at her in stunned silence,.