COOPERSTOWN, NY—Double-jointed man Stephen Rothkowitz's first date with Lois Hiller, 30, was irrevocably derailed when the 29-year-old process server prematurely demonstrated his ability to bend his thumb all the way back to his wrist, witnesses reported Tuesday. "There seemed to be a lull in their conversation, and then he just started yanking his thumb around," said patron David Cantrall, who was seated adjacent to Rothkowitz's table at the D&R; Steakhouse. "He didn't even preface it with something like, 'Hey, guess what I can do?'" Rothkowitz was reportedly unable to salvage the evening by shooting milk out of his eye.