Parking lot herd mentality

Same scenerio, first part of payback was a flat tire by a pebble in the valve cap.
THEN I'd use a length of mechanics wire around the base of a different tires valve stem, - thru the gap in the wheel, to the axle, or other solid object.
After spending time changing the deflated tire, jumps in vehicle, moves it a foot, pulls out the stem, causing another flat - no spare.
They gonna be real late, and real angry.
Touche' ! !