Up to this point she had shown absolutely zero interest in anything going on in the theater. She gets up and pulls down her shorts and bends over the ...ouch. She had no panties. Just the gym shorts.She is a very skinny dirty short hair blonde. Almost bony but not quite. I stand up and mount her from behind and her pussy is so wet I slide right inside. She was obviously extremly horny. She felt really good to my dick but fucking while standing is difficult for me in that I have trouble cumming. ..I see your slit is moist! I hear your breathing quicken... I watch as your fingers find their way down to your wet pussy... I can't help but stroke myself...You let out a long sensuous moan... it is highly arousing watching you pleasure yourself!! You see some pre-cum ooze from my tip...Your breathing quickens more...your nipples are HARD... Your sexual tension increases and you rub yourself furiously!!! In less than a minute you have a VERY INTENSE orgasm!!You see how HARD and red my dick is. " Beth grabbed my sheets, "let me see," and with that tugged them down to look at my pussy and fingers as they gently stroked. She winked at me, "you dirty slut."I gasped, "yes I am, I'm a dirty slut and I need cock."She grew serious and grabbed my arm. "look stop for a minute, this is important. I spoke to Dave last night, and he is ok with this. He is coming round soon. Mum knows and she knows we will all do something."I nodded again, "yes," I said. My fingers started back down my body, and. She was panting loudly in my ear now and I was matching her breathing. I had also managed to wiggle down my jeans so she could get her hand around my cock better. She was rubbing her crotch on my leg while she was stroking my cock which was still inside my underwear. I knew I was not going to make it any longer and I began to shoot my load. She kept stroking my shaft as I kept pumping out cum over the top of my underwear onto my chest and into my underwear. At first she did not realize what was.