Originally Posted by graphical x

Premise: doggie style is probably the most 'primal' and 'basic' hence earliest sexual position in human history

Premise: reaching the cervix requires a longer penis lengtht--although sperm 'swims' to the egg in the fallopian tubes, conception is aided by the proximity afforded by a longer penis.

Premise: the thicker the ass, the longer the required penis length


Conclusion: due to genetic selection, populations where the female's ass are flat on the average, the male penis is, on average, shorter.

Proof: Asian populations and African populations (thick booty= huge penises, on the average)

Discuss. I am not complete sure re the accuracy of the premises (and hence the conclusion) but let's discuss it.