system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Can someone explain this Dangerfield joke? “I told my dentist my teeth were all getting yellow. He told me to wear a brown tie.”
gpt
In most Rodney Dangerfield jokes, people in his life constantly disrespect him and won't do anything to help him. In this case, the dentist is refusing to provide any helpful advice. Instead, Rodney should wear a brown tie so his teeth look white by comparison.