It's a long-running 'joke' that most men don't know where the clitoris. But this so-called gag becomes less and less funny when you start to realise how little blokes really do know about the vagina.
Buzzfeed have created this hilarious (and worring) video - somewhat sarcastically named 'Men Explain Vaginas' - exposing men's lack of knowledge about our lady gardens.
From thinking we pee out of our anus to struggling to explain ovulation, it's a wonder any woman would let a man anywhere near that cherished female accessory.
Let us know what you think of the video in the comments below.