👉 The slang term "macws19" is a combination of words from the phrase "MacDonald's 1970s", which was a famous restaurant chain. It's fun to imagine someone saying: "I'm going to the McDonald's in 1970, but I'm not getting a chicken hamburger and instead I'm getting a macaroni and cheese because it's MacWSS19!"
Example sentence: "Did you know that the Mac WSS19 burger at McDonald's was actually made by Mac Donald's? No, I didn't. But now that you mention it, it makes sense. I guess I'll just have to get a macaroni and cheese instead of chicken next time."