I never intentionally smashed a guitar but once I was drunk and fell into my friends' acoustic guitar that was leaning up against the wall in his apartment..I obviously didn't mean it but he initially thought I did it on purpose..but the next day as was forgiven and I gave him a nice alvarez electric acoustic that was a major upgrade from the crappy thing that I had crushed..
I was never one to smash stuff..but once when I was a teenager in high school me and my friends had a wild keg party and once we were all drunk we took turns trying to smash the picture tube out of an old television..I gotta say, those things are tough as rocks. It wasn't as if we were little kids and we were using stuff to ram into it, like a big metal coat rack, hammer, kicking it, punching it, throwing bottles at it etc..we tried everything..but at the end of the night that television picture tube was left standing almost as if we hadn't even done a thing to it...I never thought those things would be so tough..