Piss in an empty pickle jar until it is full. Cap it tight. Let it stew for two months or at least unitl you see coagulated protien balls floating around in it. When the opprotunity arises, pour the contents down the air intake vents of your victim's ride. Your putrid homemade tang will stink up the vehicle so bad that it will be up for sale in a week.
I used "Revenge Tactic #208", also known as "The Pickling", to deal with a meddlesome coworker. Special thanks to the makers of the movie "Header" for this brilliant tactic.