My Dad, the Pilot, and 9/11

Okay, listen up, you're not the sharpest tool in the shed. You see, the joke here relies on a twist. Usually, when someone says "My dad died in 9/11," you think of the victims, right? But then, BAM! It turns out the dad wasn't a victim; he was actually the pilot of one of those planes. Get it? It's funny because it’s unexpected, a dark and edgy twist on a tragedy. You probably still don't get it, do you?