When I lived in the college dorms, I had 2 roommates. One of them was a huge stoner and ended up dropping out of school after a few months. The other one, Tommy, was pledging a frat and would go out most nights with his frat buddies and come back late and he would be drunk.
His high school girlfriend, still lived back home, but she had an overnight job and would call him after 2 most nights to talk to him. Most nights he would be so drunk when she called that he wasn't able to answer the phone. I usually answered the phone and told her if he could talk or not. One night, when she called, I kept yelling at him to wake up and answer the phone. He picked up his hair dryer and tried to talk to her. I finally found the phone and told him that he was pretty toasted. He got out of bed and started pissing in the corner, where his storage trunk was kept. I told her I had to go because he was pissing on the floor. After I hung up, I asked if he was okay and he was already back in bed. Just as I started to doze off, she called back and this time he answered the phone. A few minutes later, I was woken up by the sound of him slapping himself. It took me a few minutes before I realized he was beating off. I was in the closet at the time and didn't want to get caught looking. And the way our room was laid out, I would have to get out of bed to see his bed. But after listening for a few minutes, I got out of my bed quietly and tried to see what he was doing. He had fallen asleep with the phone by his ear. I think she was talking to him while he was trying to jack off. His dick was about 5" long and it was NOT hard. The sound was his dick flopping around and hitting himself. I watched him for a few minutes and realized he was too drunk to get hard. So I got back in bed and yelled at him to keep it down. He rolled over and started snoring. That was the only time I caught him jacking off. He usually didn't do anything until the weekend when he would go see his girlfriend.
He did walk in on my jacking off one day. He was at class one day and I was horny. I decided to enjoy my alone time by jacking off. I was getting into it when I heard keys trying to open the door. I quickly got under the covers of my bed and pulled them up just as the door opened. He walked in and said "What are you doing? Jacking off under there?" I froze, thinking he had seen something. Turns out that he was just joking and hadn't seen anything, but it freaked me out. Needless to say, I wasn't horny anymore.