Sort of a meeting, sort of an informal interview, I've dialled in from the home office and my audio setup includes a standalone mic and some noise cancelling headphones. It's going really really well when all of a sudden I see something in the preview window of my webcam feed.
Behind me, looking very concerned and confused is my 73 year old Nanna who'd decided to pop in and see me as she was passing by.
It's common for me to keep the front door locked, but my Nanna has an emergency key and knows I don't always hear a knock at the door, so let herself in.
So she's now in the house, calling out to me and she can hear me talking, so follows the sound of my voice thinking maybe I'm on the phone. Walks right into the office, where the door is behind me, eventually puts two and two together to work out that I can't hear her and finally sees herself on my monitor. She panics and goes to hide in the corner of my office, almost underneath my workbench because she's old and doesn't know where she would or wouldn't be visible from.
The rest of the meeting went really well, but overran by at least half an hour. Meanwhile I can see my poor Nanna hiding away in my peripheral vision.