The comment regarding "grown men" made me chuckle... Dude you ride a bmx.
It was more a reference towards their attitude rather than the act itself... And the fact they felt it was acceptable to do what they were doing with no regard for those who use the track for its actual purpose...
Grown Men (Adults) should know better....
Exactly Dave
It's just like people turning up with remote control model boats at the Swimming baths and saying "Well I've paid to get in "