About a 1.5 years ago, went to a DIY for the first time and set up a new deck there and somehow forgot and left it at the spot.. didn't realize till the next day when I pulled up to my local and my board wasn't in my trunk.
Went back immediately to that DIY but of course it was gone and no one was there... but someone had left behind an old habitat board with crazy razor tail and big cruiser wheels on it. Figured it was some kid's board that barely skates who probably picked mine up, so I focused that shit out of anger/revenge.
No regrets doing it, I was so mad I had to go buy a Christmas complete right after buying a new deck and the worst part was that my Indy trucks that I had on it were finally close to grinding down to the axel fully, and it was my last made in USA pair.
Before that don't think I've ever focused a board out of frustration, maybe a couple times when I was younger when the board already was halfway snapped and dusted.