After the Annual Beer Festival, the Corona beer president went out for a beer.

He ran into the president of Guinness 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 Guinness sits down and says "Give me a Coke".

The bartender is a little taken aback, but gives him what he ordered.

The Corona guy looks over at him and asks "Why aren't you drinking a Guinness?"

and the Guinness president replies "Well, I figured if you aren't drinking beer, neither would I".