Ha ha. But it shows American ingenuity too. I like to use my space pen to write when I have to write something on a wall (like when I'm not somewhere with a desk or table - you've had to do it too.) and the ink doesn't run back and stop.
Also, some of you referred to the kid riddles - here's one.
What's greater than God, more evil than the devil, the poor have it, the rich want it, and if you eat it, you'll die?
I'll post the answer later. I hate to give it away for those of you that like riddles.