Time for another question. This particular question has intrigued me over the years. Since the hotel has side-by-side toilet paper dispensers, I have the perfect visual on hand to ask this question:
This has been a topic of debate in our household over the years. My preference is for Over. Don inevitably put a new roll of toilet paper on in the Under position. Eventually I won. Now, I am happy to say, we have a consensus. All rolls are inserted in the Over position.
The hotel seems to prefer Over as well. When the room is cleaned, this is what I see: