What's the fastest way to give someone a flat tire? Pull the valve stem.

Forget pressing the air inlet or puncturing the tires with a knife, the first method is slow and the second is darn near impossible.

Pulling the valve stem is quick and easy. All it requires is a pair of needle-nosed pliers.

1. unscrew the stem cap.
2. use the needle-nosed pliers to unscrew the brass center pin until it pulls free.

If you have the time, re-screw the center pin and replace the cap. This will help hide how the tire went flat in the first place.