Oh, and guys, please note that you cannot accurately measure a penis by putting a ruler against your monitor or counting digit lengths. A picture is a 2-d representation of a 3-d object, and thus does not accurately represent movement on the 3rd axis. You would have to know the exact angle that his penis is moving away from the camera lens to adjust for the distortion. It only works if the penis is positioned exactly perpendicular to the lens of the device viewing it.