Mark: Hey, Dad. Have you ever had dinner with any interesting people?
Tim: You bet. Felix Myman, the great plumber.
Wilson: You, see, Mark? That's a lot more interesting than Einstein and his theory of relativity.
Tim: Right, Felix had a theory called "clogativity." It has to do with toilet paper and toilets.
Mark: Cool!
Tim: Yeah, it's a smelly theory, but it's really kinda neat. He came up with this thing - with enough air pressure you could shatter porcelain with one blast...