Why did my dad go to prison? Um, well, beats me.
Why would you say something like this? Did someone assault you?
No. I'm talking about the robbery; it's funny that the robbers are in jail and my dad isn't.
I understand that dark jokes can be used to cope for traumatic experiences, but you still have to be sensitive to others. One's coping mechanism might be offensive to another, and it's best to not downplay abuse for the sake of others.