When I was a lad, I spent some time in front of a mirror trying to teach myself to move my eyebrows independently, like Spock. I eventually succeeded, but in the process I also learned how to move my ears. One downside is that these ear muscles began to involuntarily try to help. For instance, if I am looking down while wearing glasses, my ears contract to grip the glasses so they don't fall off, and after a while these seldom used muscles ache from the effort.
It was only at the age of 50-something that I found out that my ability to move my eyebrows independently is not a general population thing. Amaze! Also FWIW I can wiggle both my ears, and independently too. Is there a way to make money from this ?
A quick googling reveals: "About a third of all people can raise one eyebrow: left or right. [..] But the ability to raise both eyebrows separately is much rarer. If you're not among them, that's because you cannot yet control and move the corresponding muscles."
I did the same thing as a teenager, I taught myself to waggle each eyebrow independently, but I never learned to move my ears. I didn't realize that was even a learnable skill.