A man walks into a bar and orders three beers. He explains that he has two brothers that live very far away, and every time they go to a bar they always order three beers to pretend they're drinking together. For about 6 months this man comes in regularly and always orders 3 beers. One day, he walks in and only orders 2. He looks visibly distraught. The bartender asks him what happened to one of his brothers. He says, "Oh no, they're fine. I've decided to quit drinking."