Things that have appeared in the toilet - Part 1

As this blog seems to be becoming more and more toilet-based (which is not intentional, but I'll go with it anyway), and I no longer live at the flat at which my previous 'Things that have appeared on my doorstep' posts were based, I have decided on its successor: 'Things that have appeared in the toilet'.

This is not as disgusting as it sounds, as it just means things that have appeared next to the toilet, or in the bathroom, that look out of place. Although if I do spot anything unusual in the toilet itself, I'll be sure to bring you that breaking news as soon as it happens.

Anyway, I thought I'd kick it off with something I found in the toilet at work today: A mug of water.

There are many questions that this object raises:

-Who could have brought it there?
-Why use a mug to drink water, when a glass is more satisfying?
-Is drinking water banned in the office of the person who put it there? If so, is this legal?
-If you drank the water whilst peeing, would that water come straight out as pee?
-If you drink the water whilst going for a 'number 2', do some of the particles from that get into the water and get swallowed?
-Did someone ultra-eco-friendly bring it in there to pour down the toilet after they'd used it to minimise on flushing water?
-Did someone very small bring it into one the cubicles, to actually use as a toilet?

Has anyone else found anything odd in a toilet lately?