Once I was sitting on the edge of a cliff with my back facing the drop. I leaned back forgetting that I was on a cliff and slipped and was holding onto this slippery, slopey rock. I thought, this can't be happening, I would never be this careless in real life. Then I thought, Ahah! And let go. It took me one moment longer than fearlessly letting go so it was a little frightening, but the thrill was amazing.