Elle resta plusieurs minutes pench?e, presque nue, le thermom?tre bien enfonc? dans son anus. Sa m?re revint enfin avec un thermom?tre g?ant ? la main...- Je n?ai jamais os? l?utiliser mais comme tu es volontaire, on va en profiter ! - Ho mais je ne veux pas !- Tu veux que je te vire de la maison ?- Non maman.- Alors souviens toi de qui t?entretient et paye tes ?tudes petite salope !- Oui maman.- Tu pourrais m?me t?excuser ! Je me donne du mal. Maybe this won't be so bad. The agreement we have is that our payment will happen during the visit so we'll probably have to go in some back room to get the doctor off but it won't be able to be too loud or drawn out.A handsome doctor in his late 30s greets us. “You must be Silvia and Tina. I am Dr. Webster. I'm so happy you decided to use my practice. I'm just finishing up with Ms. Beth over here but then I'll be with you.”I smile back at him feeling more reassured by the normalcy of the. She sat up and I moved my hands to her sexy hips, to nudge her into lifting herself up and down. In no time she was riding cowgirl, learning to add to things with a pelvic thrust each time, and gasping happily.After a few minutes she was dissatisfied though. She leaned over to one side, to roll us over. “Can we go back to how it was?” she asked.“Try this,” I smiled, and nudged her up. I followed her with my cock and began to fuck upwards. She got the idea and held herself over me while I fucked. I was handed a pair of lacey knickers and told to put them on - as I pulled them up I could feel my cock getting harder as they both watched me, the back of the underwear was not a thong but not a brief either - as I pulled them up they pulled into my arse crack teasing my anus - making my cock hard.They were both watching me and making fun of my hard penis in those knickers. The first mistress (the one I had arranged to see) pulled the panties higher so they really pulled up between my bum.