First of all I lost control of my chair (and my cardigan too).
No real problem, I got another cardigan and relocated to the floor.
(I'm sure that working on the floor probably breaks some working environment rule, especially when squeezed between the ironing pile and a pile of books!)
Unfortunately the pencil was deemed to be a "good game" and now I've lost control of the floor too!
Oh well, here's hoping that I have more success tomorrow!