Synopsis by Hal Erickson
Susan Blu, one of the busiest cartoon voice directors in show business, appears in this episode as Sandra, a pregnant girl who shows up at the apartment. Much to the dismay of Chrissy (Suzanne Somers) and Janet (Joyce DeWitt), Sandra declares that Jack (John Ritter) is the father of her baby. What nobody knows -- yet -- is that Larry (Richard Kline) pretended to be Jack while dating Sandra. Adding to the confusion, Jack doesn't know the identity of the woman whom he has supposedly deflowered; thanks to a mix-up in communication, he thinks it is his girlfriend, Linda (Anne Schedeen), who is in the family way. This episode was based on "Never Give Your Real Name," an installment of Three's Company's British sitcom prototype Man About the House.