The One With Phoebe's Rats

S9 E12: Rachel is irritated to learn that her handsome new workplace rival, Gavin, has been invited to her birthday party. Meanwhile, Ross struggles to keep lascivious Joey away from Emma's beautiful new nanny, Molly. Also, Phoebe coaxes her boyfriend, Mike, into helping her care for a litter of baby rats that were born in her cabinet.