We were doing our graduation in Biology and one of our lecturer had indulge us the habit of collecting various specimen in Botany. We had a gang of 4 ...oys and one girl and we used to move around in surrounding village in bicycle in search of good specimen. One day, we have seen a big water body which would be good habitat of Volvox (one kind of algae), but the problem was the water was not clear, though the depth of the water would be hardly 3.4 to 4 feet, but we could realize that the base. He liked to see her struggle for oxygen when it filled her throat. He would hold it deep in her throat as she struggled, his stomach pressed tightly against her face, the large cock pulsating in her oral passage.The cock began to push in and out of her mouth, fucking her face like it was a cunt. When it pushed in deep, Courtney would choke and gag, her throat massaging the thick cock. She could feel it moving inside her, a hand reaching down to her throat, feeling the cock bulging out her neck.. “Look Sarah, it's Phillip.” “Well hello there Phillip.” Sarah practically purred which, of course, caused poor Phillip to go beetroot coloured again. Jess looked at us both questioningly; I could see what was going through her mind but I also knew she would figure it out in time. “Yes well, since you two got Alice so worked up this morning she has been twice as difficult as usual. I have been trying to get her out of there for nearly two hours. She is drinking again and won’t leave unless I. As I finally heard him,... say........ You have done well my pet you may now bring yourself to orgasm , but after you do I want you to enjoy the sexual fruits of your labor! Using your fingers I want you to lick them clean and show me your well abused stimulated cunt so I can see how you have used and stimulated it is!....Then go to sleep like that, naked in your bed, wearing nothing! It was all I could do to say, yes master, I groaned saying thank you, thank you OMG! Thank you sir' I.