To swing or sway your phallus ( see doodle ) around loosely, either by malicous intent or by accident.
1: We were just sitting on the couch when mr szalay jr ran into the room stripped off his pants and proceeded to doodleflap maliciously.

2: Tommy ran from the shower to the towel closest , unintentionally doodlefapping as he ran.
by deplorablesloth December 5, 2015
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