Is it possible to play with yourself while you're sleeping?

A couple of days ago, I fell asleep on the living room couch and had a wet dream. I would like to know if I was jacking off while I was asleep, because I DREAMT(or at least I THINK it was a dream) that I was playng with myself covered in blankets while a family member was watching tv. I seriously hope this was a dream. In the dream I ddnt reach climax coz I noticed sumone was there and I rolled over.