The 5-minute demonstration was bad enough, but standing naked in a room of school kids for the next 50 minutes was even more demeaning.By the time tha... Beth reached the 6th grade classes, she began spending a week with each class. In addition to showing the students basic anatomy, Beth was also used as a demonstration for different aspects of sex. On Monday she demonstrated basic masturbation techniques by fingering herself. This was awkward because Beth had literally never played with herself.. The next moment she took of her top shirt revealing her bra. Then her jeans fell to the ground giving me a good look at her bottoms. The black bra fell down her arms, revealing some of her beautiful B cup breasts. The sight turned me on a bit. It was a welcome thing because I hadn’t been with a girl for a couple of months. The main reason for that was my busy job.But then one other night she again did not shut the shutter properly. This time she faced front so I could she her beautiful breasts. Oral sex was always part of it. She liked that as much as fucking, if not more. Prolonged “69” sex she was particularly fond of. She wanted to be licked and kissed on her vagina and clitoris and liked sucking my cock at the same time. She knew exactly the timing with her mouth to make me come at the moment she did. As she climaxed, her thighs would grip tight round my neck, as her contractions took her, a final wriggle, near suffocating me , and then she did one last thing with her mouth on. "Winking at Helen, he affected a voice something like a disk jockey on steroids, "Unit one to unit two."After a few seconds Laura answered, laughing, "Go ahead unit one."Jeff dropped the disk jockey voice. "Hey, these things sound pretty good."Diana came back. "Hey Big Boy, wanna go out tonight?" You bet, Baby. Just to remind you, Helen and I are going to stop by the bank. I talked with the branch manager yesterday. He's supposed to have another account set up and ready for Helen to sign. Also.