I own a car space in the apartment where I live. In the last couple of weeks, an inconsiderate pleb has been repeatedly parking his/her car in my spot. At first, I thought it was legitimate mistake and left a polite note asking the owner to remove their vehicle. A few days later, they did it again. Once more, I left them a polite note (discretely replacing mine with the more terse one that Nathan had earlier left on their windshield). Late last week I discovered the same car parked in my space for the third time. This made me angry (very, very angry). Hypothetically speaking, if one should find themselves in such a predicament, is it excusable to do one (or more) of the following?
(A) scratch the car up (just a little)
(B) let out some air from the back tyres
(C) stick a potato in the exhaust pipe
(D) pour fish sauce in the air intake