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2.
Goin crazy like a boss, step three of the Twank by 2Dope.

Also: See Twank
That fool was goin nuts last night with his dino arms.
by Joseph Sorensen October 04, 2011
 
1.
The form of a runner in which, cet runner looks to be mimicing the running of a dinosaur. Whether it be directly with both arms up around the chest area, or the flick of the wrist while the arm is moving back opposite to the leg moving forward.
Broooo julia has dinoarms!
Yo that guy runs with dinoarms.
Running with dinoarms is bad.
by FootRun710 February 09, 2011