Season 4: Episode 87: The Show Must Go On
Cliff takes Rudy and her friends--including Peter's surprising talkative little brother Paul--to a tribute to Vaudeville. They are amazed to find that they are the only ones in attendance at the show. The children quickly grow bored with the show, and the performers keep having to stop so that the kids can use the bathroom. The emcee, Eddie, finally wins them over with his adept physical comedy routine. Meanwhile, Robert shows up at the Huxtable house and falls for Vanessa's friend Morgan. His strange comments quickly send Vanessa, her friends and Theo running for cover. Clair also flees from Robert briefly. She later has a talk with him and encourages him to relax and stop discussing marriage with every girl he meets.