Chandler parodies the Mister Rogers theme song, singing (about Ross), "who's the bitterest man in the living room?" as he takes his jacket off. Then, "the bitteresy man in the living room," as he takes off his shoes. Then, he looks at Ross and says, "hi, neighbor."
When Monica tells the friends that she can't decide to serve lamb or duck, Chandler replies, "lambs are scarier, otherwise the movie would've been called 'The Silence of the Ducks.'"