Tuesday, July 16, 2013 2:11:14 AM
Cartunze, it looks like they're biting it. if they were blowing it up their hands would be holding the valve/blow tube as they blew to make sure no air escaped as they took the next breath....that`s clearly not the case though, in fact you can see the tied bit of the balloon well away from where their mouths are, so they are biting an already blown up balloon.
Monday, July 15, 2013 10:16:07 PM
OhNoFrodo, I don't think they are biting into balloons. The force of the explosion indicates they were blowing up something that was much smaller than that that has walls much thicker than a balloon. The contest was probably to see who could blow it up to breaking point first.