What si the most weird thing that happened in your interview?

At least once in our life, we would have sat in an interview as the interviewee and crazy stuff happens when we are super nervous to answer smartly.
And that is when life gets messy and weird things start happening.

When I attended an interview for a startup, they were giving me an intro on what their company does. And my face is so transparent, like what I think would appear on my face so clearly.
The cherry on the top is I was very nervous and that made my face look like I've seen a ghost and the interviewees got scared, thinking that they've said something wrong and they started to freak out.
I took me a second to understand why they are looking concerned and then I had to clarify that my face is freaky. And obviously, I wasn't selected.

So what is your weird interview experience?