I've been friends with this guy for years; on a few occasions when we were 18-19 he used to call to my house late at night (it was on his way home); typically drunk. He'd collapse into my bed and pass out. The temptation was too strong on one occasion - I moved my hands across his thigh, making sure he was passed out, before gently undoing the buttons of his jeans. Once done, I moved my hand inside, feeling the outline of his cock against the boxers. His dick was chubby but not very long. As I continued to slowly rub it he got bigger, but not erect. I finally worked up the courage to pull down his boxers, gently squeezing his dick and pulling back his foreskin. Temptation got to me and I moved down in the bed, running my tongue over his semi-erect dick, just to taste it.
I got a bit nervous then, he was still snoring but I didn't want him to wake up as he was uber-straight, so I put everything back in its rightful place. I was so horny at this point that I jacked myself off inside of a minute thinking of the other things I wanted to do to his cock.