Also known as The One with the Fonzie Doctor.

The Central Park Gang make it to a century of episodes in style as Phoebe gets ready to welcome a litter of her brother's offspring into the world. Elsewhere, Monica's affections for Chandler are put to the test by a hunky male nurse, and Joey definitely has kidney stones. And what better way to ring in the 100th episode than with the return of the long lost segment #AskElizabeth???

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