No matter how sexy your intern/secretary/whatever is, just don't do it, OK? It was a mere hint of that type of behaviour that got Dr Gordon (Cary Elwes) into such a sticky situation in the first installment of the unrelenting horror franchise.

How Easy Is It To Achieve? Quite tough, as there wasn't even any stone cold evidence that discreet Gordon actually sealed the deal with a young medical student, but the compromising photos were enough to have the doc's ankle chained to the radiator in Jigsaw's grubby bathroom.

So it's probably best if you're never snapped alone in a room with any young, potential affair fodder, just to be safe.

If You Have To: Make sure you get some decent blackout blinds installed in your love nest.