Every day, she used to come and gulp down nearly a bottle of vodka and pass out on the table. I used to pick her up and let her sleep in my private ca...in alone and lock it from outside. Early mornings I would go and wake her up and sometimes I used to drop her to her home. I didn’t know what was bothering her so much but didn’t want to invade my curiosity on to her private life.One Saturday night, however, she got drunk too much n started dancing on the floor to DJ s tunes. She used to. I finger-fuck her for a moment while a pulled my erect cock out of my pants.Then, a pushed her out of the chair a made her kneel in front on me. "Suck me, beautiful," I told her.She stared at my dick for a moment and then leaned forward, engulfing me slowly. Compared to my s!sters, she was very inexperienced regarding oral sex but she was a fast learner. I pulled her top and bra off, letting her beautiful tits swing freely as she eagerly sucked my cock while slurping sounds filled the room.. The work is interesting but time consuming, we both hope to get our doctorate and a good job in some pharmaceuticals lab. We like girls though and would like sex now and again, but we can't seem find the time to establish a relationship with anyone. We were talking about this one night, in our room, when I said."Look Tom, we're both experts in biochemistry, surely we can discover a aphrodisiac or something that we could use on the local female population, you know, for sex without going though. Jim held the base so I could press harder. Faster and faster I rode this huge cock. Soon my pussy was on fire. I didnt know what was happening. I felt like my pussy exploded and all of a sudden it was too sensitive to be touched. I had to stop. But I sunk down and stroked Jims cock until it shot out its load. All over my chest his cum flew. I had no real tits yet, they were just bumps. Now that I knew all I had to do was rub my pussy, I started to do it myself. But it was not the same as.