Male or Female Nipple? You Aren't Supposed to Know

Protest takes many forms, and for some 54,000 followers on Instagram, that form is the nipple. Only female nipples are banned on Instagram, and critics who see that as a double-standard
Instagram account founders challenge social media rules on female nudity

Genderless Nipples exposes Instagram's double standard on nudity

Puffy Nipple: Why Does It Happen to Some People? - Leif Rogers MD

Why do people have extra nipples?

Montana Politician Wants to Resurrect the 'Road Beer', by Newser

33 Old Wives' Tales for Predicting a Baby's Gender

Why are female nipples offensive, but male ones aren't? - Quora

There's a simple solution for prominent nipple problem in women

Free the Nipple? - The New York Times

Galactorrhea: lactation and nipple discharge causes and treatment

Why Are Women Expected to Keep Their Nipples Covered? - Washington