The female orgasm is an elusive creature. Sometimes you're able to see it and identify it clearly. Other times, it's seemingly an apparition -- like the Loch Ness Monster or Bigfoot of female bodily functions.

We tapped porn stars Kayden Kross, Katsuni, Jesse Jane, Joanna Angel, Riley Steele, Asa Akira, and Sophie Dee to learn how professionals pull off this climactic trickery ...