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Involuntary jittering movements brought on after inhaling, ingesting (sometimes even just breathing) something. This acts to heighten the enjoyment of said 'something', but can often lead to a life of being laughed at brought on by the comical nature in which it is performed.
Nat: *takes a sip of green tea*
Chad: *also takes a sip.. then J-Jitters*
Nat: GRRRR.... *punch*
by nathurnal July 01, 2009
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