Man, I hate to hear these stories. My younger brother rides a crotch rocket(ZX10? I think. I don't know. It's green with Monster Energy drink stickers on it)
I know that he has done silly things while riding. He tells me how he can ride a wheelie for so long and what not. I listen but always caution him to be careful. He has been on some wild rides in my hot rods over the years so it's tough without sounding like a hyprocrite.
I will tell him about these two gents, though when I see him this weekend.