A foolproof idea!

It suddenly dawned on me that THERE IS ABSOLUTELY NO POINT in dieting until after Pancake Tuesday. So to solve the immediate problem, i.e. getting down to the chippy, I had a Brainwave. The chippy is at the bottom of a big hill, so all I have to do is borrow a couple of skateboards, strap one to each foot and zoom all the way down! What could possibly go wrong?