"Listen," John says, and he gestures vaguely with the knife he'd been using to cut his sandwich in half. "Don't knock good food. It's been a long time since I've seen this stuff. You can learn to miss real junk food."

So there. He finishes cutting the sandwich and steals some more cheese fries off the plate, because he can.

"You don't want it, that's fine. I'll eat it."

He might regret eating all of it, but that's fine. He'll do it anyway. Some regrets are kind of worth it in the moment.