Three leaders

Three leaders of the big beer companies meet for a drink.

The president of Budweiser orders a Bud. Miller's president orders a Millers and the president of Coors orders a Coors.

When it is Guinness turn to order he orders a soda.

Why didn't you order a Guinness everyone asks? Nah Guinness replies.

If you guys aren't having a beer neither will I.