The Loo Roll Meme

Do you, like me, spend too much time in anonymous hotels? If so you will have noticed the peculiar fact that when you go into your private bathroom you will find that your toilet roll has been folded into a neat triangle at the end – like this:


It seems to me only to prove that someone – who might have dirty hands, and who has almost certainly been cleaning other bathrooms – has handled the next sheet of toilet paper you are going to use. If that worries you then you’ll throw a sheet away which is wasteful.
Or does it look pretty? Or ….
And does anyone do this at home?

Photo from TED 2008 flickr

There are many theories. See