Tell me a cold joke.

Once upon a time, there was a sheep who had to work 10 hours every day. One day, the master told him that there was a reward for working more, and he did it. Next, the owner cuts off one third of its wool every month. At the end of the year, he knitted a sweater for it and told it: no, this is your reward. Congratulations, continue to work hard next year! The sheep was very angry and wrote its story into a fairy tale and named it "performance pay".