Maybe you could figure out some sort of ratio difference between a guy's height and his penis length, and list those as choices? Like maybe divide your height in inches by ur erect length in inches or something. Like for me, I'm 5'8" tall, so 68", and my erect length is 7.25", so my ratio would be 9.38. Or maybe it should be the other way around? Divide length by height?
Either way, in my case, I am a guy who is a bit shorter than avg in height (at least for white American males), but who is also a bit longer than avg downstairs, so that ratio isn't always what you expect!
