Photo: Ed Levine’s Eats. Say goodbye to the maddening ear-poison of Kool Man’s “Pop Goes the Weasel,” and harken back to the more civilized jingle of a bygone era: the gently ringing bell of the retro Good Humor ice cream truck. On Sunday Adam Kuban got the scoop of the week when he happened upon this atavistic enabler of sweet teeth outside the Museum of Modern Art. The vintage customized Ford pick-up is just one......