I should probably stop making jokes about 9/11.
My dad died to it, he was a great pilot.
Listen here, buddy. The joke is that the person's dad died during 9/11 but they were a "great PIOLET". They meant to say "pilot" but they are a dummy and can't spell. The joke is dark but also relies on wordplay, because the dad was a pilot, get it? Also, your dad probably doesn't love you because you are so bad at understanding jokes.