Cheers - Season 11 Episode 5

Because Gary's Olde Towne Tavern is advertising heavily, Sam and Rebecca decide to hire an ad company to write a jingle for the bar. As Rebecca has only $200 to spend on such, the ad company foists Sy Flembeck, their resident hack writer, onto the Cheers account. Sy is not very creative or original. All his jingles are placed to the tune of Old MacDonald Had a Farm, and spell out the establishment's name in place of "E-I-E-I-O", even if there are more or less than five letters. But Sy's approach to jingles may actually have the desired if unintended effect of good advertisement. Meanwhile, Maggie O'Keefe has come back to Boston and wants to see Cliff. Once Cliff sees Maggie, he faints: she's very pregnant, supposedly with his child. However, Cliff doesn't believe that he is the father because… Cliff decides to marry Maggie anyway. Before Maggie decides what to do about Cliff's proposal, she has some additional news for Cliff about their past relationship.