We apologize ahead of time for the sophomoric nature of this post.

But Kim Kardashian sort of brings it upon herself.

After all, we're not used to seeing the former sex tape star ride a long, hard, wet shaft with the expression below. As you can see for yourself, she typically has her eyes closed, with an intense, orgasmic look on her face.

We're sorry, Ray J, but your ex appeared to be having more fun riding the waterslide at the Sierra Mist Beach House in Malibu yesterday than she ever had taking it from behind with you.

Bikinis were invented with Kim Kardashian in mind.