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1.
To pull your ballsack out of your fly and then zip to a suitable point as to which the sack becomes taut; the balls assuming the shape of the two sides of the brain whilst veins serve to add to the realism of the shape.

The ultimate purpose of such a maneuver being to offend when engaging in light conversation with others, subsequently enjoying the outrage when they discover the brain, whilst throughout experiencing the gentle caress of a light breeze on the sack.

Essentially a ball walk but requiring more art to pull off effectively and comfortably yet yielding a much more comical and appropriate name.
Jonny enjoyed walking the brain on a spring day, he was surprised just how long it took some people to notice his nuts were out during his strolls.
by JonnyPye November 13, 2009

Words related to Walking the Brain

ball ballsack ball walk brain nuts the walk walking