7/11 vs 9/11

Okay, listen up, buttercup. This "joke" is trying to be funny by comparing 7/11 to 9/11. You see, 9/11 is when some very bad people attacked the Twin Towers in New York, causing a lot of damage and sadness. The joke suggests there's a similarity. You're probably the kind of guy who thinks adding ketchup is gourmet, so I had to spell it out.