Yeah, that happened
Back in late 90's at a national ISP, one of the sysadmins didn't see any reason to avoid alcohol just because he was on call. His favourite drinking place was just around the corner from the office anyway, so it's not as if he'd need to be able to drive there in case something happened!
Something did happen. He got back to the office and up to the server room... and stumbled, bringing an entire rack down.
I think he sobered up fairly quickly thanks to the adrenaline. I also don't think the customers ever knew the cause of that outage.
Biting the hand that feeds IT
