I am a freak I guess. I first noticed it about 5 or so years ago. I was scratching my nose, taking my fingernail and dragging it right down the front, and I noticed my nose would twitch. I later found that if I flicked my hand, in the space between my forefinger and my thumb (not the webbing part, but further towards my wrist), my index finger would twitch. If I flick my cheek, my cheek muscles twitch (this is the only place where it hurts if I flick it). I keep exploring, and in the past year, I found that if I flick my wrist, either my middle, index, or thumb twitches. Flicking my “pinky ligament” in my wrist just causes my muscle in my wrist to twitch, and not my pinky.
I am now working on my forearm. Flicking this muscle causes my middle finger to twitch downward, towards my palm, and then upward. Within a few weeks I should master this one.
My friends tell me that I may cause myself serious nerve damage in the future. I tend to agree with them, but twitching is so damn fun. It just feels good, because my muscles are moving, and I can see them moving, but I am not in control. The stuff just fascinates me.