when dd was a few months old, she did a mega chicken korma style poo which exploded from the nappy, leaving marks on the study floor, then as i carried her upstairs to be changed, she managed to get some on my white cotton shirt (had to be pulled off over my head), the wall, her hands, her feet. clearing it up took ages - every time i wiped a bit, she waved an arm/leg and more appeared. in the end we both went & sat in the bath, clothes & all. it was the only way!
having dreaded the whole nappy thing before being a mum, i found this highly amusing, and particularly enjoy telling single young blokes about it when they start telling me how happy i must be as a mum.