The best dive bars are places that go to great lengths to provide sufficiently suspicious service and hard-bitten comforts that patrons don't ever feel the need to leave. The buck-a-beer pricing at Sooner's Tavern in Curtis Bay is right on the money, but it's everything else there--the automated teller machine, the glass door to the men's room, the surveillance cameras, the plethora of meats-and-sweets snack foods, the nickel-and-diming for sending and receiving e-mails and faxes and money-grams, the admonishing signs that presume moral turpitude--that add up to one, overwhelming conclusion: This is a dive bar that, if it only had cots, a self-respecting drunk could actually live in.