In the USA one has to do more than this to get the point across. I prefer what my dad used to do when my younger brother poked around. Nothing that a swift kick in the ass won't cure. One time he kicked him so hard that his shoes flew off. After this time, he actually picked up the pace.

I agree. People in America are much bigger assholes and are much less polite.

It probably wouldn't work here in the UK, as people would just think "Go around me, or you'll get knocked over too!" Also, if they looked over their shoulder, they might just realise that no one is actually behind them on a bike, so they wouldn't move. If it did work though, I would use that all the time! xD