look up any word, like bae:

1 definition by WormShit678

jacking off....usually in class....consists of the usual penis stimulation, then when called upon by a teacher or raising ones hand, u then shake ur leg violently to finish the job...usually causes ur desk and the desk in front of and behind you to shake also.
Andrew ***** did the ninja shake repeatedly in class due to his recent break up.
by WormShit678 August 11, 2006