I've had two different experiences like this. The first is a co-worker that did a different tactic. When someone would ask him if he wanted to get lunch and no idea of where to go, he would ask "rice or noodle?" This somehow always lead us going to a place that had neither of those things.

From what I've seen, the inverse of this seems to also imply where a group will end up going for lunch. I've had co-workers say Costco or Taco Bell "isn't lunch". Because of those negative statements, that is exactly where the group ends up going.