Season 1: Episode 23: The One With The Birth
Carol is having the baby and the childish competition between. Ross and Susan are at each others' necks until Carol can't stand it anymore and throws them out. They wind up locked in a janitor's closet with Phoebe and almost miss the birth. Meanwhile, Joey overcomes his squeamishness when he befriends a single mother-to-be and stands by her while she gives birth. Rachel takes a liking to Carols obstetrician, and Monica has major maternal pangs. When Carol finally has the baby, everyone is overwhelmed by the miracle.