I don't think its funny;
I'm active enough to where I've had my share of battles with pavement, gravel, rocks, submerged volcanic rocks (those suck the most, salt water in wound cuss: ), etc. Generally the hard inanimate objects won, and no, it wasn't much fun.

I feel sorry for the guy, and as much as I don't like him I can't make fun of him over this, anyone who is physically active will eventually spill out on something.