It turns out, there is a right way to hang toilet paper on the roll. We know this for 2 reasons now… first that’s how the patent shows it from the late 1800s.
And second… the science guys say that that when you hang it with the flap over the front, it gets the paper further away from the wall or cabinet and then you’re less likely to get poopy germs on the wall. If you do the flap over the back, then it’s right against the wall and you’re spreading germs.
Here is the full info:
Yes, there's a 'right way' to hang the toilet paper, and it's about hygiene (msn.com)