I work in an open plan office. We have two banks of seats where the public sit waiting to be called to interviews that are back-to-back and have a semi-transparent gauze screen divider between them. The gauze has pictures on it, so sometimes it's hard to see if someone is sitting on the bank with their back to the desk where I sit.
Anyhoo, whoever was due in to see me had stood me up and I was mildly bored so I asked Steve, the chap who has the misfortune to have the desk next to mine & at the time was fairly new to the job, who he had in next.
He said Miss X, who's somewhat notorious locally for having 12 children by the age of 36.
Thinking the office was public free, I said quite loudly,
"Ah, you know she has 12 kids, right? I bet the last couple had to hang on to stay in there."
He then flashes me a WTF? look and calls her over.
She'd been on the other side of the screen, slightly slouched on the sofa.
My arse could've turned coal to diamond, it contracted that much.