I'm going to use a harsh analogy to prove a point
What analogy would you like to use?
I'm going to use a trash can, a heart and a piece of shit
You shouldn't be rude to people and call them trash. How would you feel if someone did that to you?
People should learn how is it naughty to be offended by some trash.
Come up with a better analogy or a story to tell the person if you are upset with them. Mocking them with backhanded insults is just as bad as verbally abusing them. Tell them why you are upset and see if they will listen to your reason.