The proper way is to cut the valve steam with diagonals. Thats sufficient.
If charged your charged with the value of the damage.
A valve stem cost 2 bucks a slashed or ice picked tire could start at 200.
The valve stem gets you criminal mischief,the tires and windows jail time.
You can't beat free legal advice!
“The valve stem gets you criminal mischief,the tires and windows jail time.”
Sooooo....how much time did you do? ;-)
Even easier, find something small (like the prong of a broken hair clip you find in the bed of the offending, mis-parked truck) and jam it into the valve enough to let all the air out while the dipwad owner is watching a movie. No damage at all, and, in the case I'm familiar with, no spare... ;-)