When I was at boarding school there used to be a trick called a pie-bed. What they would do is untuck the top sheet on a dude's bed, at the foot end, then bring it up to the top and turn it back before tucking the whole lot in and putting the blanket back exactly how it was. I can't tell you how irritating it was when they got me with that, because I had spent a late night studying and I jumped into bed and found myself cooped up halfway down. It is quite a rude jolt when your feet meet resistance when least expected. No amount of kicking could free the 'pie' and I heard raucous laughter from around the corner.
In the same spirit, imagine if someone 'pied' your sock. By that I mean...imagine if they 'gummed' it closed halfway? :evilgrin:
