Was on holiday in lake como and was on the coach going back to Milan airport. Not had a shit for a few days so tried to force one out before the coach left. Nothing would peep it's head out, so just got on the coach thinking that if I really needed one it would arrive at the airport. About 5 minutes into the 2 hour coach ride, my arse decided that now would be the most innapropriate time to release the poo. Stomach churning, I thought that letting a small bit of gas out would be the best option. Big mistake as a small chunk of Molton poo seeped out. I managed to stop the flow quite quickly, but the remaining 2 hours I was sat holding in severe diahorea that could easily killEd every person on board the coach. Quite proud of being able to hold it in that long, it was very painful. As soon as I arrived at the airport i did a 100m sprint to the bogs to let it out. Only then I realised how bad things could have got. I was actually grateful that the amount that seeped out was so small.
Ever since then, I have always made sure I travel on a coach with a toilet, or at the very least a sink.