Send this anonymously to the victim of your choosing. We recommend sending to your boss or favorite coworker at their office address. Make sure you check the option that requires them to sign for it so it extends the embarrassment time.
Place these on ATM’s, coffee makers and printers at work, mailboxes, drink machines in fast food restaurants, etc. Shake people’s faith in signage, exploit gullibility, and leave a trail of hilarity everywhere you go.