When a beautiful art teacher, Arlene, moves into the building, Jack signs up to take classes from her. When Arlene's model doesn't show, Jack offers to fill in. To his horror, Arlene informs him he must pose in the nude. Not wanting to appear old-fashioned, Jack embarrassedly poses, only to have Furley walk into the class. Jack begs Furley not to tell, but the secret is out when Larry discovers the nude portrait of Jack, which Arlene painted out of appreciation, and sells it to the Regal Beagle. The girls discover the nude portrait hanging over the bar. They all have a good laugh, but Jack gets the last one when a gorgeous girl, Marilyn, intrigued by the portrait, dumps Larry for Jack.