He'll never suspect it was you if he has never met you before. Just sayin'.
Getting mad is for suckers. Put on your DC Ambush Board Short and get even with one of the following options:
- Sneak into your adversary's kitchen and discretely contaminate his spatula, salad bowl, and flatware with your man parts
- Wrap a battery-powered adult toy in tin foil and plant the device in a seldom-used pocket of his carry-on travel bag
- Gain access to his robust, diversified stock portfolio and move his life savings into a ten-year CD that's locked in at 1.25%
- Leaving an upper decker is always a nice touch