p. diggy. listen after this accident. [ bleep ] >> dude. guys. >> are we out here?> just chill, dude. >> that's serious injury. >> yeah. >> that was bad. >> now, tanner said this was his first concussion he ever experienced. he says thanks to his friend for coming to his aid and helping him through it. he doesn't remember a thing about this incident. he went back and watched the video, doesn't remember even a second of it. >> wow. >> maybe he needs to start wearing a helmet. he's got one on. he does have a small helmet over his hat. but if you go back and watch the video in slow motion, it's in a different place than where his helmet is, almost like he hits the side of his head. he is expected to recover from his injuries. this next video, not quite sure what this fella is up to. >> what's he trying to be? >> exactly, what is he trying? >> going for the backflip and just changed his mind? >> ouch. >> i don't think he had enough speed. he's going up on a hill. it's not like he could do a backflip and end it that high up. the ramp is like 2 inches. >> he's like, i wan