This is actually song related, but I got myself in a pickle at work by reciting a story i can't source, and searching for it on Google has not panned out:

When i was a volunteer DJ I heard an album of alternative music where one of the songs was about a real artist, either realist or surrealist is hard to say:

The artist was at home with his son. The son was doing a painting of the back yard. The artist asked him why he (the boy) had left out the tree in the back yard. The boy looked at his drawing and said "hey, I DID leave a tree out of the drawing."

Whereupon the artist went out in the back yard with an axe and chopped down the tree.

This is supposed to be a true story but I can't locate it. Any ideas?