When I get good and angry at someone whom I know well enough to have access to his house, I like to give him an “upper decker.” No, that doesn’t mean I take said bastard to Turner Field with a fistful of $5 tickets that damage nasal linings. It means I take a shit in the tank portion of his toilet.
The first time I utilized this little trick was at a party in undergrad. I’d had a few beers and then noticed that the girl I’d come there to talk to was spending more time talking to the host than she was with me. Transferring my anger from her to the host, I politely excused myself, searched out his bedroom, walked into the adjoining bathroom, lifted the lid to the tank, and dropped trou (and poo). I returned the cap to the tank and finished my business in the portion of the commode traditionally used for such purposes, and left.
Now, I use this tactic when I go to grocery stores whose line signs say “10 items or less.”