" But," I started to protest. I felt her hand on the handle of the dildoin my ass. My brain was screaming "NO" while at the same time myhardening cock...in my panties was screaming an overwhelming "YES."She tugged on the handle and pulled the dildo from my ass. I felt thecool head of her dildo pressed against my hole, which had not been openedas wide as her dildo by the Anal Twist."My name is Marisa," she said as her hands gripped my hips. "I am notyour mistress, so you will never address me as. She wanted me to concentrate on her friend.After a time Mattie's pussy felt a little looser. Not much, but I assumed it was all I was going to get until I pried it open myself. I let my cock slide in about an inch, maybe less. Again, Mattie and I gasped together. This was like trying to fuck a soda straw. I could feel that my cockhead was hitting her hymen -- it felt like a little string stretched from one pussy wall to the other. I began to press against it on each stroke, and Mattie really. The human race hasn't changed much then." I suddenly felt I was on trial and had just failed an important test. She wagged her head sadly and turned once more to stare out of the window. I still could not believe such a petite figure of feminine perfection was male. Then she turned to face me again. "They were four very frightened species. They were stunned to discover that there were an infinite number of worlds and they thought I was the harbinger of Armageddon. Don't you remember all those. I get back behind her to enjoy the show as the instructor moves around the room checking people off... As she starts the compressions - I slide my finger along her moistness and when she bends down to do the breathing - I slide the middle finger into her pussy and my index finger into her ass at the same time - making her gasp but she gets the idea as I'm thrusting in time to the breathing she has to do... She's breathing harder - and probably starting to cum as well - as I piston my fingers.