Am I wrong for laughing at this?
No. That was truly idiotic & the idiotic things idiots do are some of the funniest things you'll ever see; after all, they only hurt themselves & no innocent pedestrians/bystanders were harmed in the attempting of that idiotic stunt.
On a side note a friend of mine had a broken tail bone once & he said that was one of the most painful things he ever had happen to him; but his dad kicking him in the prettythang all the way back to his house didn't help.