Where: 1400 Alaskan Way, Seattle 98101; down Four Seasons’ steps; not quite directly under the viaduct; across from the Aquarium; a few doors down from the Highway 99 Blues Club. What: In certain circles, the words "Black," "Ball," and "Line" inspire a sort of rushed anxiety, a feverish can’t-wait. Is it open yet? What’s going on down there anyway?? No, it — never have the terms ‘antique...