The narcissistic stare

I recently learned of the “narcissistic stare”.. I’ve been doing it since I was a kid but I never associated it with NPD. When I reflect back to times where someone has told me “no” or has severely pissed me off I realized that I give a death stare. It’s not voluntary, it just happens. It’s almost as if I am peering into their soul wishing for their destruction, no matter who it is or what they are supposed to mean to me. I’ve actually been told that when I am angry my eyes darken and I look like I want to kill them (by my own uncle) and he even stated that when I am angry, even he fears for his safety. He said this in a jokingly way but it was almost as if he genuinely meant it. Does everyone experience this or is it just some narcissists?