As Monica's biological clock ticks away like a time bomb, Carol goes into labor. When Ross and Susan can't stop bickering over who gets to help Carol more, Phoebe drags both of them into a closet to settle their differences - but all three end up getting locked in just as Carol's about to give birth to the baby. And Rachel flirts with an OB/GYN who has a love-hate relationship with women's private parts.