Sometimes in life stupid humor is what we need to resort to to cope with the awful realities of living with stupid people. (I don't intend that remark towards you, but rather the people who commit these attrocities) Sorry if that offends you. I don't feel the need to repeat how awful this is again and again. That is very apparent to me.
It's common for people who are faced with tragic(or even potentially tragic) or horrible situations to resort to Black Humor to prevent being emotionally drained. Even my dear mother made a humorous quip at my father's viewing, which someone else might have considered inappropriate, and certainly would have been if made by anyone else. But I knew it was to keep her from falling apart.