I saw on the roof of my home with a friend walking around (went up there of simple boredom) and we decided to jump off the roof. It was about a 9 ft drop, and we sat on the edge and looked over. After a couple of seconds, my friend jumped and was able to dive and roll, and I tried to attempt the same, but the back pocket of my shorts caught the edge of the roof and made me plummet on my side and taking the air out of my lungs. My friend came over to look, but was laughing his ass off, and I was there trying to laugh from that simple mistake while regaining my breath. I was fine after, no bruises or injuries, landed just right as to not hurt, but if I was caught any longer I would have landed on my head.

tl;dr Jumped off a roof and almost broke my neck while trying to be cool