While those residing in D.C. proper rely on Ben’s Chili Bowl for their half-smoke needs, Arlingtonians have long had their own classic half-smoke purveyor: the Weenie Beenie. We’d been foolishly ignoring the Weenie Beenie for years until a recent conversation with a co-worker convinced us that we’d been missing out on a genuine slice of old-school Arlington. He clinched it for us when he noted that his old man used to hit the Weenie Beenie…