Say you’re sitting on the toilet and you notice a bug in your house. Could be a spider, could be a roach, could be a mosquito, doesn’t really matter. The point is, that insect/arachnid now has you at an extreme disadvantage. It could steal your wallet, take a cheap shot and slap you in the chops, or worse and those are just what it might do right then. If, by the time you’ve risen poop-butted from your throne and run to get an implement of squishery, the creature has absconded then you are quite literally shit outta luck. Always have a shoe handy and hope they don’t figure out how to get inside it.