Sex is one of those experiences that - generally speaking - feels better than it looks.
But this new sex tape is like nothing you've ever seen - and might give you some new insights into what's actually going on when a mummy and daddy love each other very much.
The video clip was recorded inside an MRI scanner, during sex between an open-minded couple. And yes, you see everything. According to the British Medical Journal, it was made just to see if it was possible.
It's not safe for work - of course. But it's mind-blowing.
Take a look, above.