Let's Make Robots!

three ain't enough

Asimov's laws

http://www.somethingawful.com/d/news/asimov-laws-robotics.php?page=1

holds thirty laws because three just ain't funny enough

A peek at number eleven:

11. A robot, specifically a big, wide robot, may not pretend to be a refrigerator and then make a scary noise when a human being opens it.