A couple weeks ago my friend kept bugging me because I was going up to my uncles to ride my three wheeler. Finally I gave in and I let him come with me. We get out there and we go to the woods and I show him how to ride, shift gears, and were the brakes are. Well I start riding and he asked to ride so I let him. He is doing fine for the first ten minutes but then he does this hill climb just fine but when he came down the hill he hit a tree and broke his femur bone in half. He claims I did not show him were the brakes were but I swear I did.