I sigh every time I see toilet paper hanging under the spool as opposed to over. Toilet paper orientation is a big deal. So big I sometimes switch offending rolls mid bowel movement. It’s one of my OCD indulgences.

But spool orientation is more than just preference. Researcher Barry Sinrod found that 68% of Americans roll over. In fact, 60% of those who earn $50,000 a year or more roll over. Meanwhile, 73% of those who earned less than $20,000 roll under.

When asked what his research proves, Sinrod replied, “I don’t know, but it’s sure interesting.”

I’ll give it a shot. Rolling over conserves more paper. It’s not as easy to let it fly, but it offers better control. Under, on the other hand, is easier. Similarly, making less than $20,000 a year is easier than $50,000.

Granted, being underprivileged isn’t always about taking the easy road, even though it is some of the time. And 40% of middle class and higher roll under. But that’s the best I can come up with.