Awesome site. Great pictures. It solved a very important logical mystery for me: Where the front/mouth of a computer mouse is and if we really cover its mouth with our filthy paws when we plug its long tail into our computer when we are browsing cat video's. :)

In the 1990s I needed my mum to check something on my dad's computer. So I phoned her up and talked her through the arduous process of turning on the computer and clicking on a few icons.

However...

This was going nowhere, and, after about half an hour of struggle, I asked my mum which way the mouse was in her hand. She had the 'tail' coming out the back, which made sense to her.

Before working this out I was wondering if the light from the window was making it through the flimsy plastic of the mouse, to prevent the sensors from working. Or maybe something else was plugged in, robbing the MS-DOS PC of enough interrupts. Or maybe the ball was clogged with cat hairs.

We got there in the end, however, it was a lesson in not jumping to conclusions. I had just been temporarily defeated by my mother's lack of computer literacy.

Don't be fooled, the mouth is obviously the opening on the bottom where the ball (tongue) sits, like a facehugger or headcrab.