A new virtual 'sport' has been developed in Japan - Air Sex. Basically, it's like Air Guitar, but you don't pretend to play guitar. I found a clip on You Tube, but have decided not to post... ;)
From Mainichi Daily News:
Just like air guitar pits competitors prancing around on stage empty handed but acting as though they were playing a hot riff, air sex requires players to simulate sauciness as though with a partner, but actually while alone.
"Air sex was originally invented by guys who couldn't get girlfriends, but desperately want to have sex," J-Taro Sugisaku, the self-professed creator of air sex, tells Weekly Playboy.
Sugimura tells the weekly that air sex began when a mostly male group gathered at a theater in the trendy Tokyo district of Shimo Kitazawa earlier this year. They began talking about sex techniques, then started demonstrating them. Soon, a competition developed to come up with the most outrageous display of faked fornication.