If a passenger doesn't understand something you're saying, you're flight attendant should not poke fun at them. You don't know who that person is or what their situation is... We flew first class. Y wife did not understand the flight attendant. She is from the Philippines and is learning the language. She is an immigrant. She is also a person that speaks 4 languages and I'm not counting English yet. I am a cancer patient. When your flight attendant told my wife that she should have watched sesame Street, I was deeply offended. The flight attendant was a rather large man, built like someone that exercises. He was a little dark skin. I am a brown person and so is my wife. There was nothing racial about the incident but he was very insensitive. And unprofessional. If it happens again, I will not fly Delta again and I will cut up my new Delta Amex creditt card. Thank you and God bless you all at Delta.