I should warn you this test is not for the feint hearted so if you have a pacemaker or are of a nervous disposition read my Christmas Socks poem instead.
By the way, when you get to the end of each level release your mouse and then quickly press down again to take you onto the next level.
Right, off to bed with you! And if you're wondering if that was me. Fortunately, it's not. I'm far better looking, although I have to say there is a vague similarity after a night on the tiles.....
Merry Christmas Everyone!