so, there was this 12' high log and these guys said they would ride off ...
the first guy gets up there and looks around and says
"yeah, sure, piece of cake, all you have to do is get up on your back wheel and ..."
so he landed (alive!) and collapsed in a heap with his small wheeled bike severely tweaked
then his team mate with a full size bike went up and landed it and followed with a 360 on the rear wheel and a couple of spins on the front too!!