What's next, Bill Gates jokes?  My favorite is a
one-liner:
 "If Bill Gates had a nickel for every time Windows crashed...
 Oh wait! He does!" 
 No, even Bill isn't that rich.  In fact, I don't
think there's that
 much money in the world. 
 
 One nickel per crash, one crash per day, for each of hundred million
 machines, for a year, is a little over 1.8 gigabux.  How rich is
 Billy-boy?  How many Windows boxen are there?  (I don't know the answer
 to either.) 
 
More than 50e9, and well over 1e8.
I've never used Windows for a full day with only one crash.