 Okay, I'm curious if anyone knows what this is called. This is my residual limb. It got lopped off a couple of years ago, but every now and again, when I get it in the right position, let me see if I can do it. Yeah, there we go. This is not muscle fatigue. I don't know what it is. It'll just shake like crazy. It's not bad. I just don't know what it is. Let me know in the comment section if you do.