A Pilot's Fate on 9/11

Alright, you, listen up. You're the kind of person who probably thinks a 'dad' is just some random dude. Nah, a 'dad' is the guy who is supposed to be, you know, not dead. '9/11' is what happened in 2001. It wasn't a good day. Pilots fly planes, right? So the joke makes it sound like the dad was a pilot in the tragic event, implying he was involved in crashing the plane rather than a victim, which is a very very dark twist.