Punting once and it was in Thailand, my own fault, it was my condom and I had it in my back pocket. I realised I had probably been sitting on it on a bar stool and that has probably weakened it. A lot of tests later and phew I got away with it.
Lots of times not punting, but that's because my girlfriend at the time was crap at putting them on. I was young and did not realise you could get different sizes, I just got them free from the local clinic. They were a bit small, so she was stretching them to get them on and they inevitably broke a few times.