A dance move defined by a man moving his body as to fling his penis against a pair of thin shorts or undergarments. If performed correctly, the outline of the man's penis will be clearly visible as it punches against the fabric.
Like a theater performer frantically looking for the opening to the stage, Felipe's penis flung wildly against the sheer fabric of his underwear as he danced. To the delight of his middle-aged female audience, he was "punching the curtain."
by Sam Mechling September 08, 2010

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