Reading the story from @TimeWastingButFun reminds me of another jacket one, which wasn't me doing the damaging, but I felt responsible.
In a packed Carols by Candlelight one Chridtmas Eve, I was stewarding and standing at the back (not a seat left in the house). During one of the congregational carols with everyone standing to sing, I could see a teenage boy (14 or 15) turned sideways in the pews, leaning against the stone wall, not singing, and looking bored out of his mind. It looked as if this was a duty family outing with grandparents which he was tolerating, and they were all packed in the one pew, so I could see why he was turning sideways to get a little space to breath when he could.
As I watched, he slouched further, then suddenly stood up straight, showing his not inconsiderable height for the first time. As he did so, the hood of his jacket caught light from one of the candles on the high windowsill behind him.
It was like a slow motion scene from a film as noone else, including him, noticed, and I was ploughing my way through the crowds trying to alert him.
Thankfully, someone behind him realised, and beat the flames out with a hymn book and the boy wasn't hurt. However, the hood had a huge section missing, with melted charred fabric round the edge.
I offered apologies and compensation from the church, but he muttered that it didn"t matter and he and his family refused and they said it was just an accident. It clearly did matter to him, but he was consumed with embarrassment and hated being the centre of attention, especially having been set upon eith a vicious hymn book attack by a 75 year old stranger. Poor lad - the perfect end to the perfect evening for him!
No candles on that windowsill ever since - it had never occurred to us over the previous 50+ years that this was a risk, as we all had to climb on a pew to reach, and it would not have happened if he had been facing forwards (and been less tall!).