"Now, Jennifer, behind one of these doors I have personally placed a brand new Jaguar XJS"
"Eeeeeeee!", Jennifer squealed in delight.
"But", continued MB, "behind the other two doors, there are goats! Select a door and the prize behind it is yours. Which shall it be: Door #1?".
"Oh-oh-oh-oh", Jenny jumped.
or "Door #3?"
"Um-um-um-um....well...ah...okay - TWO! I choose Door #2". The audience cheers.
"Door #2. Okay Jennifer", says the host, "but before we show you what's behind Door #2, let me tell you that I am glad you did not pick Door #1, because behind Door #1 is..." The first door swings open to reveal a shabby looking goat. Jenny bounces around the stage in joy because she was thinking of picking that door.
"Ah, but the name of the game is 'Watchya Gonna Do?'. You picked Door #2, but there is still Door #3. I'm going to offer you a choice: either you can keep the door you picked, Door #2, and if the car is behind it, I'll throw in a dinner for two at the Hoi Poloi Restaurant..." The audience gives a collective "oooooo" (who wouldn't want to eat at the exclusive Hoi Poloi?)
"... or you can trade it for what's behind Door #3 - AND if it is the car, I'll throw in a year's supply of Platypus Wax! Tell us about the Platypus Wax, Joe"
Joe's voiceover proceeds to tell us all about the wonders of using Platypus Wax on a Jaguar. As he drones on, Jennifer is nervously trying to decide. Until, MB spins around, points to her, and says (with the audience chorusing behind him)
"What - Chya - Gon - Na - Do?"
Should Jennifer stay with her original choice (Door #2), switch to Door #3, or does it make any difference?
Assume the dinner at the High Poloi and the Platypus Wax are worth about the same dollar amount.
Aaaaaaand, before any of you wise-acres start, Jennifer lives in Toronto - the Jaguar is of far more use to her than the goat.