That’s not surprising to me at all. He seems like he would be.

I don’t remember where I was made aware of it, but it was probably this. I used to listen to NSTAAF regularly. This fact probably just got buried in the back of my head until it had the opportunity to come out now.

Yep, the same sound as when you yawn. I can make it happen without yawning. Honestly, I can only make it for 5-10 seconds before I get “tired”.

Regarding clicks …I’ve no idea what that one is.

Related: I’ve imagined a story where the obedient grunts in the military realize they just the nameless henchmen in an evil organization.

This was a really recent realization for me. I am one of the people who can voluntarily activate the tensor tympani muscles in my ears to create a low level rumbling sound. I recently tried explaining this to someone else and they still think I am making it up.

This sounds like owning a 3d printer.

Dihydrogen monoxide.

Literally kills thousands of people a year.