I don't think it means what you think it means

I was just watching CNN (with camera and Tivo at hand) and saw a quick commercial for Michael Moore's upcoming film "Fahrenheit 9/11".  The ad starts with a definition of the word "Fahrenheit":

Fahr-en-heit adj. The temperature in the atmosphere when it reaches the boiling point.

Mr. Moore’s publicists must be using a very thorough dictionary; I had not previously been aware of that definition.