What was your 'You should never trust a fart' story?

I had recently discovered that I was lactose and dairy intolerant, this was about 10 years ago so my options were limited and often an extra charge. My mum was also the same, and we were getting up early to go to Chessington and ride Bubble Works before it shut down. The station had a Starbucks and it was around PSL season, so of course we both go PSL's with soya milk. When we started drinking them (on the train) we both commented that it must've been very good soya milk as they didn't taste like they normally do. Get to Chessington and my belly started hurting, I was due on my period so I just made the assumption that it was cramps. As the day goes on I'm a little gassy, not a big deal. Then suddenly my stomach is really bad and I just needed to fart. I then shit myself. I had to whisper to my mum very urgently as I had no idea what to do. Thankfully my mum is the type of woman that always has a spare pair of underwear and wipes on her, and as she's disabled she has a key for disabled toilets. She gave me the underwear and wipes and let me clean up. Then shortly after she urgently had to go too, and we quickly realised that Starbucks had screwed up our coffees. This was about 1 hour into a whole day out with my niece (who was 3) and my little brother (who was 12), so we just had to get through it with regular toilet breaks. Another plus though was that thanks to my mum's blue badge we got fast track tickets for everything so it was pretty easy to work toilet breaks into the day out.