I sneaked out a silent one in the till queue at Tesco's once. It stank !.
There was a young couple behind me with a little boy. The mum suddenly said ''Poo, can you smell that '' the man replied 'Yes I'll check him''
The man then looked into the lads nappy and said '' You pay, I'll go and change him'' The poor little lad found himself rushed off to the Loo's to have his ( probably clean) bum changed. I was trying so hard not to laugh that I had to bite my tongue really hard.