This pic is displayed as a warning to little children of what may happen if they press the wrong key. This occurred when Robaire clicked on a not previously noticed button with 4 arrows outward facing.
Waz was in lecture mode as you can see on Skype, attempting to make some obscure point about the beauty of distended pixels or some such to his un-caffienated colleague. He jumped up to fill the 24 inch screen.
Needless to say Robaire quickly pressed the button with 4 inward facing arrows and peace returned. Nasty shock tho..........