Genders are like the Twin Towers At first there were two of them, but now it's a sensitive subject
Why would you make fun of terrorism victims, do you think this is a funny joke?
No I swear, I have nothing against the Twin Towers or the lives lost!
If you have nothing against the victims, you would not be making jokes about the terrorist attacks from 9/11.  You should have respect for the victims instead because you are American and so were they.  Instead of joking about it, honor the victims by showing your respect.