This thread is closing in on the posting limit and I will share something I truely am ashamed of.
When I was 13-14 working at a guitar workshop as part of work training during school (Don't know what you call it over there? Here it's called pryo).
It was the last day and I was suppose to polish/insert new strings in an accustic guitar for a paying customer. I succeded in burning the guitar head while "cutting" of a string and didn't manage to hide it very well. I put it back in it's case, (nobody would see for a few days) recived the praise from the manager, stole a couple of picks and went home.
I never heard back from them about the damage guitar. Still to this day I feel really ashamed every time I walk past the store.