In an episode of Dilbert, he was ordered to make "art". So after some surveys and market testing Dilbert found that the perfect picture was of a simple blue duck. His picture becomes a worldwide phenomenon, with t-shirts, sports teams, and massive art exhibitions all modeled after the duck. The duck ends up becoming extremely unpopular after Dilbert’s boss is seen with it painted on his belly at a football game.

But that is not the end of the duck!

If you watch carefully, you can find the duck popping up in almost every episode after that.

For example; in the Feb. 22nd show, the duck can be seen on a poster advertising stamps with the duck image in the post office scene.