I just watched a video on YouTube that was about someone and a couple of ticks that his son had. At one point he said, "He knocks on one wrist 3 times and then knocks on the other to make it even." This reminds me of something I do, where I touch one part on the left/right side of my body (usually my feet or hands), touch the opposite part twice, then touch the original part once more (1-2-1 pattern).
Also, a couple times a year, I will randomly have one big twitch while I am moving around in my bed.
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