What You Need:
- Balloon
- Empty soda bottle
Instructions:
- Bet your friend that he can’t blow up a regular balloon.
- Put the balloon inside the bottle and wrap the balloon opening around the mouth of the soda 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.