Well I could have told you that. Of course wear a helmet if operating an open motor vehicle. By open, I mean a vehicle with no doors and such, like a dirtbike.

Just be glad because I think you got off easy. The human skull is only 1/4 of an inch thick, and hitting your head on a curb going 20mph could have easily popped it open.

I saw my buddies stepdad lose his 2 front teeth riding a motorized trike (3 wheeler thingy). He hit a bump, went flying upward, and hit his mouth on the handlebars. He was drunk though, so what do you expect.