[Lee Stewart]

It's an ongoing fissure in bathrooms around the world: Do you hang the toilet paper roll "over," with the loose end on top, or "under," with the loose end closer to the wall? With the latter, there's more chance that your dirty hand will have to touch unused portions of the roll, potentially spreading viruses and bacteria. In a similar vein, it's also better not to cover a public toilet seat with toilet paper, because the paper is way easier than the seat for germs to cling to, experts say.