technically, if the woman is five foot tall, her mouth would be at a height lower than that... I'm guessing a good 6 inches lower, which would mean 4.5 feet (54 inches) leaving 39 inches for the rest of the torso ... and since the cock typically is several inches lower than the hips ... well I'd have to say it's likely a 5' woman wouldn't have to bend her neck down all that far