You can watch TV anytime. You can have a snack anytime. But there's something about having a snack while you're watching TV that feels special. I actually don't do it a lot.
@Fragglemuppet Back in the day, my friends and I used to have this X-Files watching ritual of us having Dr. Pepper and Pringles, every time we were watching the show. I have no idea where it came from, but it was nice, at the time (I don't really drink soft drinks anymore, and Pringles state they have gluten now).