Joey argues that no good deed can be selfless, while Phoebe believes the opposite. Phoebe spends the rest of the episode striving to prove she's right. After several attempts (including letting a bee sting her), Phoebe finally decides to donate $200 to a PBS telethon where Joey has been taking pledges all day. Due to a long-standing grudge against Sesame Street and PBS, she's not too happy about giving the money, but she knows the donations will help other children who do like Sesame Street. Unfortunately, Phoebe's donation puts them over their telethon goal, which gets Joey on TV for taking the pledge. Watching Joey get excited about being on TV makes Phoebe happy, effectively ending her quest for a selfless good deed.
Although the episode ends without a definitive answer, it brings up an important philanthropic question about altruism and egoism. To what extent is giving for others? Does it matter if we partially, or wholly, give to benefit ourselves? Is there a proverbially line we 'shouldn't' cross?