Taking a dump, and then going through the elaborate ritual: a quick sniff to determine its fragrance, wiping (sometimes two times, sometimes ten times, depending on the circumstances, as you will all be aware), pulling your tweeds up, tucking in, adjusting, spraying (essential in most cases—some of my doings have a pong that have been banned under the Geneva Convention), before walking out and sitting down … only to fart and realise you’ve snapped one off too early and you’ll need to do the whole business all over again.