Yes - sitting in class in one of those big lecture halls in college. I some of the best orgasms during philosophy class. There was a boy I'd gone out with a few times - just as we were leaving class, I dipped my finger inside to give it a nice wet coat, then walked up to him and said "taste this - what do you think?" ... we had a wonderful time that afternoon in his room.
But I almost always dip my finger many times after I masturbate - I love my taste.