Perforated clingfilm is the most rubbish product I have ever given house space. Without the line of savage teeth on the box, the plastic wrap ldpe film rips randomly down the length of the roll, turning in on itself and twisting into an impenetrable mess. The line of perforations becomes the strongest point of the roll, the one place at which it will never tear.
But we cannot live without regular unperforated plastic wrap. Anyone who had school cookery lessons, grandly titled Domestic Science in UK schools, was taught that everything in the fridge had to be 3C: "cool, clean and covered," and what that actually meant was covered in clingfilm.
I remember when our family first encountered clingfilm. How we children marveled at the TV adverts showing a bowl of strawberries covered in transparent film turned upside down without spilling. Whatever did our grandmothers do to cover food? Somehow they managed by putting a plate or a lid on top of the dish.
I am told that it is great to use when one wants to play a practical joke on someone.
I knew someone who every April 1st covered the toilet pan in cling film Ewwww.
So very sad.