I'm doing a vague science experiment (in the loosest of terms) to try and find out if there is some sort of ratio between shoulder height (wrist to shoulder) and erect penis size of the human male.

The above investigation follows a series of interesting investigations of mine, that show (at the current sampling level) that all Domestic Dogs have a penis exactly a fourth of their shoulder height (sampled from a Chihuahua, a German Shepherd, and a Great Dane), and that all felines have a penis exactly a twelfth of their shoulder height (sampled from two cats and three lions).

If you wish to help me out with my little bit of scientific nosiness, then please feel free to leave me a comment (or message, preferably, considering it being potentially sensitive information, and with less risk of overhyping size!) with the length of:

Your arm (from wrist to the shoulder, including the shoulder)
Erect penis size (from tip to base, measured side-on)

If you want to be really nice, you could throw in your race and/or sexuality, too. Any and all data is helpful!

Asides from that, look forward to a large colouration of my all time favourite piece of furry art in the near future, and I get some volunteers! :)