We'd note that Mr Watson was cunning to think of this for the first time, but would caution others that copying him, now that the idea is out, would be merely to waste our time and one's own.
This is definitely true.
I heard a story along a similar line a few years ago. I cannot vouch for it's accuracy, but it is amusing and I thought I would share.
A lad applied to an art college, and was invited for an interview/audition. After speaking with the admissions panel, he was taken to a large room at around 10am. In this room were all manner of art supplies, from paints to pottery wheels, along with a buffet table with a large selection of food. He was told to make something by 4pm.
He proceeded to spend the next few hours dabbling, hoping for some inspiration. He started painting a landscape from memory, then abandoned it. He tried producing a sculpture from clay, and gave up. He tried a few snacks. Nothing was coming to him.
Around 2pm, he resigned himself to the fact that he had failed. He had tried just about every format available, and couldn't think of any way to proceed. He had also finished the entire table of food, except a small piece of cheese he had dropped. This is when he decided to have some fun.
He started at the piece of cheese, and painted tiny mouse footprints along the floor. When he reached the wall, he chiselled out a mouse hole in the skirting. He painted a new window in between the existing 2, replicating the view outside (a brick wall). He was like a mad man, running around and adding bits to (or removing from) the room everywhere, until he heard a knock at the door.
As the door opened, his heart sank. He felt sure he would be booted out, or possibly arrested for criminal damage. Looking around the faces of the admissions panel seemed to confirm this view: There was a look of horror on their faces.
At this point, one of the panel spoke: "This... What... This...
"is amazing". He went on to say that it was the most creative and imaginative piece of artwork he had ever seen, and immediately offered him a place at the college.
When he got home, he told his friends about this. The next week, one of those friends went to the same college. He took the same idea, and made the room into a piece of art (albeit in a slightly different way). At 4pm, when the panel arrived to inspect his work, he was escorted off the premises and told to expect a bill for the damages.