.. I jumped a mile in the air. But as I turned, I was greeted with the sight of my good colleague, Sonia, with her skirt and panties bunched around he...r ankles and two fingers of her right hand buried in her shaven cunt.I stood there stunned. Both of us did. The situation was so erotic but so embarressing."I... I, I'm so sorry, I didn't realise anyone was in here..." I managed to stutter out."It's ok, it's my fault." Sonia replied. I felt I should leave, but I couldn't move, the sight was too. Hence, we were in Lamaze classes learning how to do baby birthing with the least amount of stress possible. Me, you ask, no I wasn’t especially nervous about anything. I guess I did have a small concern as to the baby’s health and all, but the doctor said no problem that everything looked good, so no, I wasn’t worried. In fact, I was very much into the whole scene.My brother was also into it. I think mostly to keep me on center if that would be the way to say it. He must have told me,. Still, I was beginning to lose some muscle definition. My six-pack was pretty much a four now, for example. A bit of lifting and jogging would get me back to my ideal weight in the lower 170's. Needless to say, I would never have given any of it a second thought if it weren’t for Michelle. As it was, the only thought I had was of me pounding my little sister's pussy, and wanting to be in the best shape of my life for that occasion. Admittedly, my thought process was more than a little muddled. When we started really whipping them both girls were crying in pain & screamingthrough their ball gags, but due to them, not too loudly. I told the guys thatwe each could take 10 swats on EACH girl this time, meaning that somewhere ontheir back side they were going to get 140 hard swats with a soft rope. Howeverit also meant that NOW they most likely would also get some nice red cuts onthem as well. They did too by the time we finished their back sides. Both Angel& Becky had 10 to 15 nice.