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I bet you can't

Try these tricky puzzles on your family and friends - I bet they can't!

Tie a knot!

  • Bet your friend he can't tie a knot in a rope without letting go of either end.
  • After he has finished trying, cross your arms in front of your chest and grab an end of the rope in each hand.
  • Unfold your arms and there will be a knot in the rope!

I bet you can't blow up this balloon!Blow up this balloon!

  • Bet your friend that she can't blow up a regular balloon.
  • Put a balloon inside a cool drink bottle and wrap the balloon opening around the mouth of the bottle.
  • No matter how hard your friend tries to blow up the balloon, she won't be able to do it!
  • The bottle is filled with air and there's no room left over for the empty balloon to expand.