That moment when you’re trundling contentedly along a pavement in your powerchair, fortunately not far from home, when you suddenly hear a loud pop. You look down to find that you have just ran over a small pack of chilli or barbecue sauce, probably from a nearby fast food restaurant, and it has exploded all over your trouser legs. You do your best to clean it up before returning home to get a clean cloth and freshen up, but you know you’re going to smell of that cheap, sweet sauce all afternoon. And suddenly you know that it’s going to be one of those days.