balloon dog guys

This Video Will Either Make You Laugh or Cringe
This Video Will Either Make You Laugh or Cringe
This Video Will Either Make You Laugh or Cringe
Next to the Top Ten list, my favorite David Letterman bit was "stupid human tricks." I don't know how to describe what you are about to see.  What I'd like to know is; how did they stumble on to the fact that they could even do this!