Chinko326, the self-proclaimed flasher, invites us to watch as he trains his penis with a pump. The room is filled with the soft hum of the device as he places it over his semi-erect cock. The pump's cylinder expands and contracts, mimicking the motion of a mouth or a tight cunt. Chinko326's breath hitches as the vacuum intensifies, his cock hardening and lengthening. He moans softly, his hips bucking slightly, enjoying the sensation. The pump's action increases, and Chinko326's cock becomes a glistening, throbbing beast, ready to burst. With a final, triumphant pump, he releases the device, his cock standing proud and tall, a testament to his training.