If you’ve ever browsed a porn site (DON’T LIE, YOU HAVE, DON’T EVEN TRY AND DENY IT, PERVERT), you’ve probably come across the occasional “squirting” video, showing a woman ejaculating upon orgasm. However, you’ve probably also heard the rumor that “squirting isn’t real,” that it’s “just urine,” or that they use quick cuts in the filming and are actually pouring water inside the woman to make her LOOK like she’s squirting.

So, what’s the real story? The folks at HuffPo asked sex expert Emily Nagoski, and she had some very interesting facts to share. Check it out – and then log in to OBC to meet someone you can test her science on ;).