Ejaculation promotion apparatuses. Apparatuses for promoting ejaculation may include a sensory component coupled to a shaft at or near a first end of the shaft, a bar coupled to the shaft at or near a second end of the shaft, a rail coupled to the bar to permit the bar to move along the length of rail, a pin coupled to a wheel and inserted through a slot of the bar, and a motor coupled to the wheel. A housing includes the bar, the rail, the pin, and the wheel. Operation of the motor rotates the wheel, which moves the pin between two ends of the slot. Movement of the pin between the two ends of the slot moves the bar between two ends of the rail. Movement of the bar between the two ends of the rail moves a portion of the shaft in and out of the housing.
