Massively multi-player… thumb-wrestling?

TED
Jane McGonigal: Massively multi-player… thumb-wrestling?
Summary
This time, the speaker teachs us a game: thumb-wrestling but it's new that is  massively multiplayer thumb-wrestling.
This is played with more than three thumbs where both thumbs and other people's both thumbs are in the room.
When you use it this way, you will be able to get to feel joy, relief, love, surprise, pride, curiosity, excitement, awe and wonder, contentment, and creativity, while only this one minute you play it.
This is a great game that can be played simply and easily.  Let's try, please.