we were on this rough gravelly road and there were all these busted very high curbs in this old neighborhood where they were tearing down homes. anyway my friend thought it would be the perfect opp to show me to do an ollie on a not so smooth surface. anyway i was doing pretty well until i hit this one piece of jagged jacked curbed & didnt bring my knees high enough so the wheels got stuck, i busted my trucks. I fell back on my bootay, like sliding. got so busted fell back and hit my head, had gravel in my hair tore up my arm, bootay adn thigh and got a small concussion. LOL i still kept riding for a bit after tho. LOL but yeah, getting gravel out is not too cool. LOL