Pepperoni Order

Listen up, buttercup. This joke is dark, like your future after I'm done roasting you. The "twins" are the Twin Towers, and when they "ordered pepperoni" but "got plain," it's a crude reference to the 9/11 attack. Pepperoni sounds like "pepper-on-me," implying they wanted to be fiery, but they ended up just plain destroyed. Get it? Or do I need to draw you a picture with crayons?