While Tim worked at his computer, Doug decided that it was time for Tim to change himself. Doug realized a month back that Tim found him attractive, and he used that to his advantage often. Plus with his own appendage operating in such strange manners, he would have much easier time getting his roommate closer to the edge.
Tim was working on his homework when he felt something hit his shoulder. When he looked over, he saw Doug jerking off to such a degree that his dick was crossing the room. Tim was disgusted at Doug's behavior, but found himself thinking about the boy behind him for a while. The grunting from Doug didn't stop, and the endless masturbation continued. Turning back, Tim saw Doug's dick snaking across the room, mostly hard.
"Cmon, Tim. I could use some help." Doug said from his bed.
Tim turned back to look at Doug saying "I wouldn't touch you if you had the only working cock in the country. Which we both know you don't." This didn't stop Doug from moving his dick closer to Tim's asshole, making Tim even harder with a feeling he hadn't had in a while now.
"Aww, but Timmy. I just want a little suck. Please?" Doug continued to plead. Tim ignored Doug for the next hour or so, despite still having a hard-on for what was happening behind him. Doug kept moaning and whining and bothering Tim, so he decided instead to just go to bed. Within twenty minutes Tim was asleep. It was at this point that Doug sprang into action.
Ignoring his now multi-yard long dick draping across the room, Doug walked over to Tim. Doug grabbed Tim's hand and moved it to Tim's dick. Despite sleeping, Tim was still fairly hard from the constant arousal of the past two hours. Doug had counted on that. Doug moved Tim's hand up and down the shaft, guiding him. After a minute he let go and had nature take it's course.
Tim continued to masturbate in his sleeping state, aided by Doug right next to him. At the same moment of climax, Doug woke Tim up with a slap across the face. Bleary eyed it took Tim a moment to realize what was happening. And in that moment, Tim came all over his chest. Almost instantly, he felt the changes beginning.