The last carboy I broke (years ago) was on the vinyl floor in my basement. I was running to catch the phone, slipped and slid into it gashing my leg fairly deeply, but ultimately not anythings serious. But it COULD have been an artery.
And then I started thinking "what if one of my kids comes running down here and falls into one hands first"...
Really dangerous and fragile things. Keep them put away safe or, better yet, don't use them. U actually rarely use them but coincidentally put 5 gallons of beer in a carboy just last week for the first time in a while. But I was very mindful of handling and storing.