In my 20 years of brewing I have broken only one carboy.
Broken is a loose term as the built up gasses did the actual breaking, I was asleep at the time.
BTW, want to know how much 5 gallons of beer is ?
About 250 square feet I would say.
The bottom of the carboy blew out cleanly about 1 inch off the bottom and the beer simply flowed out in all directions covering the kitchen and dining room floors.
Sure glad it was a rental....
On the other hand ( pardon the pun) there is a reason why, in a world where everyone else owns a skill saw, I own an "un-skill" saw. According to SWMBO anyway.
The worst part was feeling the blade decelerate on the bones in my finger.
Kind of a buzzing then the slow roll to a stop.
Only 14 stitches too.