KCR fu
I have to admit doing something along the lines of this every so often on the poles in the MTR and KCR here in Hong Kong, although not as obviously as this guy.
[youtube]http://www.youtube.com/watch?v=Lay7ueQ5cWk&NR=1[/youtube]
[youtube]http://www.youtube.com/watch?v=Lay7ueQ5cWk&NR=1[/youtube]