My dad was in 9/11, that's rude, and he was a great pilot.
9/11 Pilot
Explanation
Explain Bear
Listen up, buttercup. This joke is dark. The person is saying their dad was "in" 9/11 which is bad because of the Twin Towers tragedy. Then they said he was a "great pilot" implying that their dad was the pilot of one of the planes. People like you are probably the reason why they put instructions on shampoo.