Play Fruit Ninja on a Lumia 920...with a knife

Browsing through YouTube, I stumbled across this video of a guy playing Fruit Ninja (pretty decently) on his Lumia 920, using a knife rather than a conventional finger. It's not something I'd personally be willing to try, but it's pretty cool nevertheless.

Lumia 920 Knife Fruit Ninja Gameplay (via adrianisen)