Frankie and Mommy

S5, E18: While Charles is working at the diner, Frankie Romano, a salesman, stops in to sell his 'Dog-O-Matic,' a device that turns food into the shape of a hot dog. Moments later, Lillian arrives and rushes into Frankie's arms. She tells Charles that they almost married years ago, but he introduced her to his best friend instead, who was Charles' father. Charles is upset that Frankie and Lillian are spending so much time together.