"I told my dentist my teeth are going yellow. he told me to wear a brown tie"

This quote by Rodney Dangerfield is a humorous method of revealing the idea that sometimes individuals do not take us seriously. In this case, the speaker is telling their dental professional that their teeth are going yellow, and the dental practitioner reacts with an absurd tip to use a brown tie. This is a humorous method of saying that the dental professional isn't taking the speaker's concerns seriously. It implies that the dental professional is not making the effort to listen to the speaker's concerns and is instead providing a ridiculous reaction. This quote is an amusing way of expressing the concept that in some cases people do not take us seriously and that we need to beware who we rely on with our issues. It also functions as a pointer to take our own health seriously and to be sure to seek out the guidance of certified experts.