Quotes more than sayings but here are some:
"Beer - Because one doesn't solve the world's problems over white wine."--Anonymous
"Don't bother trying to join the Bureau of Alcohol, Tobacco and Firearms. It turns out they're apparently against all three." --Wiley
"Sometimes when I reflect back on all the beer I drink I feel ashamed. Then I look into the glass and think about the workers in the brewery and all of their hopes and dreams. If I didn't drink this beer, they might be out of work and their dreams would be shattered. Then I say to myself, it is better that I drink this beer and let their dreams come true than be selfish and worry about my liver." --Jack Handey
Jack Handy is the best IMO
"Drink today, and drown all sorrow; You shall perhaps not do it tomorrow; Best, while you have it, use your breath; There is no drinking after death"--Ben Jonson
"To alcohol! The cause of - and solution - to all of life's problems." --Homer Simpson
"Pretty women make us BUY beer. Ugly women make us DRINK beer." --Al Bundy, Married with Children
"You can't be a real country unless you have a beer and an airline; It helps if you have some kind of a football team, or some nuclear weapons, but at the very least you need a beer." --Frank Zappa
"You're not drunk if you can lie on the floor without holding on." --Dean Martin
"Beer makes you feel the way you ought to feel without beer." --Henry Lawson