I know I'm at the risk of taking an offhand turn of phrase too literally here, but just in case anyone is ever tempted to break a bottle over someone's head lik

I know I'm at the risk of taking an offhand turn of phrase too literally here, but just in case anyone is ever tempted to break a bottle over someone's head like they do in the movies: don't. Glass bottles are surprisingly strong, and breaking one over a slightly springy surface like someone's head requires a very forceful blow which could cause serious injuries. And that's before we get to the broken-glass-going-everywhere problem. If you do ever need to deal appropriately with some pervert taking upskirt photos, I recommend putting him in a headlock and getting a couple of other guys to help you wrestle him to the ground, where they can hold him down while you lecture him on the subject of good manners and appropriate behaviour.