revenge

 Vint was an excellent craftsman, however, and could get all the portrait work he desired—more, in fact, than he wanted to paint. He needed the money he made from portraits to be able to work on the abstracts he preferred to paint. But because he hated to do portraits, he also hated the people who sat for them and provided him with large sums for flattering likenesses. He got “revenge” on the sitters by painting a fly on them.

Fra The Burnt Orange Heresy av Charles Willeford.