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Written and created by Mitchell Moffit (twitter @mitchellmoffit) and Gregory Brown (twitter @whalewatchmeplz).

Further Reading—

Size and Attractiveness:

https://www.pnas.org/content/early/2013/04/03/1219361110

Sexual Selection:

https://en.wikipedia.org/wiki/Sexual_selection_in_human_evolution#Implications_of_differences_in_penis_length_and_morphology

Female Perception:

https://www.psychologytoday.com/articles/199411/mens-bodies-the-survey

Penis Size and Vaginal Orgasm:

https://onlinelibrary.wiley.com/doi/10.1111/j.1743-6109.2012.02917.x/abstract