The great Leonardo da Vinci once drew a diagram of what he kinda figured a vagina probably looked like, and gynecologists pretty much took his word for it for about 500 years! The vaginal enigma has eluded (read: been ignored by) scientists for centuries. But in 1991, Ida and Jupp climbed into an MRI machine to do the dirty deed and penetrate the mysteries of S-E-X!

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