The entire stare-off, I kept fingering her tight asshole. She finally broke; her face turned to one of utter pleasure.“God, I can’t keep a straigh... face like that…” she inhaled, and somehow got said straight face again. I took the opportunity to give her dirty talk.“You like that, Stephanie? You like to have me fingering your tight asshole?”“God, yes!”“You want it?” I asked. She simply stared again.“Fuck me. In. The ass.” She commanded. I was more than happy to comply! I pulled my fingers out. "What's it like?" asked one."Yeah, does it feel ok?" said a second."Yeah, fucking great man," he groaned. "Yes, yes, yes my slut."He was gripping her tightly around the hips now and it was obvious that he spurting deep inside her. He had finished but he seemed reluctant to pull out."Come on mate, get out of the way," said one."Yeah, sorry," he said and pulled out and moved away.A new guy moved between her legs and he too pumped away; he only lasted a few minutes when he became still."My go,". Those really made her look like a doctor.Mom was healthy too, trim and really curvy if you ever got to see her in a bikini, but that was pretty rare, so most people probably didn't know. Underneath her trousers though, cause she did like to wear loose cotton pants, and her blouse, loose and buttoned up usually, underneath all that my mom had nice upturned breasts, a tiny waist, and some real hips to go with her firm round butt. You'd never, ever guess my mom had ever had a baby, but she'd had. "Bill sat there thinking and said, "Look, I am not sure what happened. Maybe on a guy it takes longer to change back. I know a doctor that could run some tests. He would be discrete and he is familiar with the d**gs we are making."I agreed to let this doctor examine me and I called in sick to work, Bill drove me to the doctors office and I went into an examining room. The doctor was a nice older man and reassured me everything would be fine. I was put through a lot of tests. blood work was done.