water
Hmm, the theme of the two best beer jokes. Monty Python's (pre-microbrew) "How is American beer like making love in a canoe? It's fucking close to water." – and the old brewer's joke which goes like this (I'll use your examples): A Budweiser salesman, a Coors salesman, and an Anchor Steam salesman meet in the hotel bar at a beer convention. The Budweiser man says, "I'll have a Budweiser." The Coors man says, "I'll have a Coors." The Anchor Steam man says, "Just water for me." The other two look at him and say "What? Just water?" "Well," he says, "since you guys aren't having beer I won't either."