The first presentation involved an exquisitely produced Power Point and video demonstration on all the various sizes and shapes of penises there were in the room. The demonstration showed how, when erect, the different types of penises dramatically affected the parabolic trajectory of the ejaculated semen. This one particular presentation also enjoyed lots of giggling by the girls as they tried to work out which penis on the screen belonged to which boy in the room. Despite the lighter side if this presentation there was also some very serious number crunching and formula manipulation being demonstrated. This all showed how some simple differential calculus could derive equations for the height, speed, acceleration and distance traveled of each semen spurt.Jared Reznik found himself more than just pleasantly surprised at the amount of work this one group of students had put into this task. As each of the other groups took their turn in front of the class his admiration just continued. Her wet, hot flesh felt so mind blowingly good that he felt he might explode if he didn’t slow down. He pulled out of her, to a loud sigh of protestation from her, and stuck his finger in her instead, curling it in her and collecting her moisture. When he felt his whole palm was wet with her honey he pulled his finger out, and spreading her ass cheeks apart, ran it over her tight little rosebud making it wet. “Please baby,” she moaned as she felt him playing with her rosebud, “please push it in.” He pushed his finger all the way into her little hole, following that action by a ringing slap on each of her ass cheeks. He moved his finger slowly in her, letting her get used to the slight pain, and then he started moving his finger faster and spanking her at the same time. Her whole body was on fire, nerve endings tingling as he abused her soft skin. The pleasure was so intense she felt dizzy. When she felt his cock fill her pussy again her knees went weak and he had to actually catch.
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