Follow this link to learn how penis size varies by nation (based on this project): http://www.targetmap.com/viewer.aspx?reportId=3073
You can work sex into anything...National Geographic has created an interactive map based on plotting last names geographically. While not explicitly about sex, the prevalence of a particular name can directly be tied to success in propagating the next generation, through sex leading to childbirth. So enjoy this interactive map of where our ancestors had sex: http://ngm.nationalgeographic.com/2011/02/geography/usa-surnames-interactive
