This is the most awkward masturbation experience I ever had. It was some years ago when I lived with a friend of mine. He was supposed to be gone for the weekend and that gave me the perfect opportunity to watch porn and run around naked in the apartment. Friday and Saturday were great. Sunday was a bit of a different story.
I was sitting on the couch in the living room watching porn on our 60' high def TV. I was completely naked had a ton of lotion on my dick and was stroking nice and slow. I wanted it to last and see how far I could shoot. I kept getting close to cumming and backing off. Getting close and backing off. This went on for a good two hours. As I was sitting there with a super hard boner watching my porn my roommate walks in to the apartment. There was no place to hide and no explaining my way out. I sat up and closed my legs but it was way too late, he saw everything. Without a word he walked right back out and didn't return for an hour...after calling to let me know he was coming home.
There was nothing I could do but finish up. For the record I almost hit my foot with my cum. It was a nice load.