You hate it when you're at a restaurant and the waitress comes back to ask about your food right after she's handed it to you. "How is everything?" "…Well it just looks fantastic. Come back in 30 more seconds after I’ve had a chance to put some of it in my mouth.", amirite?

It's worse when you're eating!
"How is everything?"
"Ruhrugnombifim!"

They're just seeing if you need anything. Maybe your steak isn't cooked enough, or there's too much cheese on your salad, or something. :d

That happened to me tonight, the waitress hadn't brought us the food, and she asked us how everything was. But yeah, they're just making sure you don't need anything and such..