I can make my right arm vibrate by tensing up the muscles in my forearm.
I dont me shake really fast. I mean vibrate.like, fast.
Outside of beating my brothers on specific mario party mini games that require repeatedly pressing a single button (or other games that have that use mechanic) or unlocking the cheats in bomberman 64 (needed a turbo controller to hit start repeatedly on the main menu) its pretty damn useless.
There was one Mario Party mini game (i think called domination) where you had to hit A as fast as possible, with each press making a thwomp or "domino" appear in a line. At the end, they all fall down, and you see whose line is the longest.
Some people couldn't reach the finish line. Some could just about get past it. Mine just kept going and going.
I thought that was normal and I just had not learned how to not vibrate, I can vibrate my whole body by tensing up or whatever part I focus on. So I vibrate like crazy when I do the plank... Extremely annoying....
Mad how everyone has such different experiences and how they shape our outlook on the world and what we consider normal. Like in my circles my arm thing was unique to me. I never met anyone that could do it. But looking at the comments in this post it seems like most of us think our weird trick is unique but there are almost alwas other people who have the opposite experience.