With all of our technology, we’ve become beholden to large companies who provide the services we need to use said technology. The cable company, ISP, phone company, water department (not a company, but still a provider of a modern convenience), power company, gas company, and so on and so forth. Sometimes these companies make mistakes. They are, after all, a collection of fallible humans. With all their computer systems and automated phone trees it can be frustrating. A good release might be to mess with them. Say, write out a check (who does that any more?) with the total in the form of a mathematical expression. Their automated processing systems won’t be able to read it, and the high school dropouts working in the basement won’t have a clue. Now, suddenly, that company has to spend hundreds of dollars in manhours to decipher your check.
Or, they just reject it and charge you penalties on your next bill.
[Image Credit: I'm guessing Randall Patrick Munroe]