That's when a trip to Dundalk is needed. The "blue-collar" area butts up to Baltimore City and is a close drive for those looking to run out for a while. One bar, of the many that are plunked in the middle of surrounding neighborhoods, that you might want to escape to is Kenny B's Blue Marlin Inn (118 Williams Ave.,  284-9705). The Marlin is nowhere near water and there's no outside deck. But what it does have, at least on this lonely Tuesday evening, is a jukebox full of country and a case full of fish. Well, one fish that is. In the back poolroom, the eponymous record-setting blue marlin stares blankly out of a trophy case big enough to house a small lion.