Why were the people in 9/11 upset? Because they order pepperoni pizza and only got plane.
I cannot believe what you are saying! Do you think it's okay to joke about 9/11 victims?
Oh you should not take everything so seriously. It's a joke. I'm sorry for upsetting you.
I just don't think you should make fun of 9/11. It was a horrific event and I don't think the families of the victims would appreciate such a joke.
I was just joking, damn.
It is best to find more entertaining jokes that do not mention a large tragedy.