Guest guest Posted February 23, 2006 Report Share Posted February 23, 2006 I saw my son shake his head in very high frequency for about a second and two, as if he was very angry. However, when I ask him, he did not even know he was doing that, and he was not angry. This happended once or twice before. Has any of you see this before? Does it has a name? Thanks, Jin Quote Link to comment Share on other sites More sharing options...
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