After the Great Britain Beer Festival, in London, all the brewery
presidents decided to go out for a beer.

The guy from Corona sits down and says "Hey Senor, I would like the
world's best beer, a Corona."  The bartender dusts off a bottle from
the shelf and gives it to him.

The guy from Budweiser says "I'd like the best beer in the world, give
me 'The King Of Beers', a Budweiser."  The bartender gives him one.

The guy from Coors says "I'd like the only beer made with Rocky
Mountain spring water, give me a Coors."  He gets it.

The guy from Guinness sits down and says "Give me a Coke."  The bartender
is a little taken aback, but gives him what he ordered.
The other brewery presidents look over at him and ask "Why aren't you
drinking a Guinness?" and the Guinness president replies "Well, if you
guys aren't drinking beer, neither will I."