It’s not worth getting worked up about minor slights. It’s, quite frankly, a waste of time and energy. Usually, the advice here would be to take the high road and get on with your life, but you might also choose, instead, to go away and plot a petty act of meticulous, calculated revenge that will exact itself repeatedly over the course of years following. As the revenge takes its course, the target will be repeatedly wondering why on earth this is happening to them, having long since forgotten about their actions against you.
This is the road that this dad took against the town’s “cantankerous old braggart,” Tony, who had a habit of being an obnoxious nuisance to everyone around town. Having had enough of Tony’s attitude, the dad set about exacting his petty vengeance on Tony, adding Tony’s name and address to a trove of old books and adding a note promising a reward for their return. He then set about distributing the books far and wide, ensuring that Tony would be permanently perplexed about these errant books.