The internal structure of the clitoris was first documented by MRI in the 1990s, and it wasn’t until 2009 that there was a 3-dimensional stenography of the structure.
Betty Dodson’s illustration of the internal clitoris: https://www.youtube.com/watch?v=YhoSUoZ_uJ0
BadassFatass “Drake’s BBW Line As Explained to a Guy on OKCupid”
Notblueatall “Masturbating While Fat: The Reach!” http://www.notblueatall.com/archives/masturbating-while-fat-the-reach/
Scarlateen, a great sex ed resource for teens and anyone really: