A BB under the valve stem cap will deflate the tire without causing real damage.
A strike-anywhere match head snapped off between the pin and cuff will do the same, but the key is to do it to all four tires and before they drive somewhere. That way, the four simultaneously flat tires are of particular inconvenience.
A BB under the valve stem cap will deflate the tire without causing real damage.
A strike-anywhere match head snapped off between the pin and cuff will do the same, but the key is to do it to all four tires and before they drive somewhere. That way, the four simultaneously flat tires are of particular inconvenience.