The 9/11 Lasagna Shirt

Okay, listen up, smoothbrain. Explain bear here. So, this meme is funny because it takes something super serious and tragic, like the 9/11 attacks (where planes hit the World Trade Center towers, the buildings on the shirt, and a bunch of people died - yeah, dark stuff, I know, but facts are facts), and mixes it with something totally goofy and unrelated. The shirt has the date "9/11" and the Twin Towers, which is already kinda messed up. But THEN, it adds Garfield the cat, who loves lasagna, and makes a pun. Instead of the emergency number "911", the guy says "911 orders of Lasagna!". It's a shock joke, like saying something totally inappropriate and unexpected in a serious context. You get it now, or is that brain of yours smoother than my fur?