How To: Perform the flatten tire prank on a person's bike

For this next prank tutoril, you'll be finding out how to give someone a prank tire, without having to poke a hole in the tire. It involves putting an object inside the cap of the bike's tire. This is used to help release the air from the tire, resulting in the flat tire. It's an easy to perform prank and will take a little bit of time to prepare. So good luck and enjoy!