The traditional game of conkers has been played in British schoolyards for more than 150 years.

BBC: The UK��s highly unusual athletic games

Also, while younger skaters tend to prefer the street style of skateboarding that plays out in downtowns and schoolyards, older guys are drawn to ramps and bowls that are easier on the knees.

WSJ: I Say, That's One Gnarly Grind You Just Executed