I worked for a programmer, designing the websites he was working on. I finished a website design and he complained:

Client: The color is too dull. Change it.

I did. He didn’t like it. I changed it again. Repeat. When he was finally happy with the color, he complained:

Client: You work so slow. The color doesn’t matter. Try to keep up.

Best. Job. Ever.

Source: Clients from Hell