Thing is, I see riding like that, not with the fancy foot work, but loads of illegal leccy MX bikes locally, or indeed big engined MX bikes.
Two idiots ended in a bad accident at the bottom of our road last week, the local village idiots facebook page was 'that's two less'. Family member kicked off, but it turns out they weren't kids, 21 and 25 riding illegal Moto Cross bikes at speed in a school 20 zone - driver just didn't see them (driver's fault though).
Some driver (nut case) will do this again.