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:


Why?
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
http://blogs.guardian.co.uk/news/archives/2006/02/22/the_memeing_of_life.html#more