9/11 Jokes

Listen up, buttercup. This "joke" is a play on words. See, 9/11 is a tragic event where planes crashed into buildings, causing them to burn. So, when the dude says the 9/11 jokes usually "crash and burn", it means the jokes are failing miserably... like your sense of humor. The dude is making light of a dark subject. It's like you trying to cook—disastrous.