A friend of mine told me recently that her boyfriend (who leaves the most unpleasant parcels floating in the bowl - can he not just check after flushing? ) once did a poo in a public toilet and was swiftly followed by a man and his young son rushing into the cubicle after he'd finished. As said bf was washing his hands (at least he's hygienic), he overheard the man flushing and flushing with increasing annoyance, and the little boy's voice piped up: 'But Daddy, why won't it go down?'
Needless to say, he didn't stick around to dry his hands.