Cosmo Challenge: Put your hair in a ponytail and have him gently yank it while doing you from behind.

Call me crazy, but in some ways this feels like the raunchiest of all the challenges we've done. (This coming from the girl who answered the door in a whipped cream bikini and ate a doughnut off a shaft.) But I think it's that this one seems porn-ish. And don't get me wrong, I love porn as much as the next horny girl, but that doesn't mean I want to star in my own personal porno, thankyouverymuch.

So I decided to have a little sit-down with D. before engaging in this challenge.

"I don't want this to get...weird," I said, hoping he would just read my mind.

"Uh, care to elaborate?" he responded, clearly not having read my mind.

"Like...don't think of me as a porn star."

D. stifled a laugh and I got irrationally offended. "I could be if I wanted to, you know."

"Got it, S. You're not a porn star, I won't treat you like one, but I'll remember that you could be one. Anything else I should keep in mind?"

"That's all. Except...well, do we need a safety word?"

That's when he full on burst out laughing. "S., we're not breaking out ball gags or doing intense roleplay. I think we'll be fine. All I'm going to do is pull your hair." Then he reached over and tugged at my hair. "See?"

Satisfied that this wouldn't get into icky territory (I know, I know, I'm crazy), I agreed to carry on with the challenge.

D. started by going down on me. And holy moly, I wanted to forget the whole challenge and just stick with that. But—argh—D. stopped before I could climax and moved right into doggy style. (Aside: does it bother you when a guy gets really close to making you orgasm then stops? Uh, it's not like we can't keep going, dudes. The show can go on.)

I've learned over the years that D. (and other guys) tend to really love when a girl is on her elbows and knees rather than hands and knees. So instead of your back being like a table top, it's at a 45-or-so degree angle and your butt is pointed up at him. And that's exactly what I did. It got a, "Oh god, S." out of D.

D. knelt behind me, but instead of getting right to it, he reached his right hand under and between my legs (!) and inserted it inside me. Then with the other hand he reached around my torso and started gently rubbing my clitoris (!!). And then with his other hand (!!!)...no, just kidding. But it was pretty freaking amazing. Then again he stopped before I climaxed. Duuude, come on.

He pulled his hands away and pushed his penis inside me. He reached around and rubbed my clitoris as he did. And ladies, I kid you not: within five, OK maybe seven, seconds, I finished. I think I was so warmed up that just the slightest touch sent me over the edge. It was awesome.

D. had a slightly delayed reaction (he must have been shocked that I needed just a few seconds of P in the V to have an O), but as soon as he realized what was going on, he reached up with his free hand and pulled the pony.

I had almost forgotten that was part of the deal and for a moment I thought, What the eff?!. D. tugged very gently and there was no pain. Or perhaps he tugged hard, but I didn't feel the pain since your body has a higher tolerance for discomfort when you're turned on. Interesante, right?

D. took a few minutes more to meet me at the finish line, but I was so blissed out that I hardly realized what was going on. Afterward, while we were laying in bed, sweaty and smiling, D. said, "That was hotter than porn."

Do you and your guy ever get a little rough with each other during sex? What's the farthest you've gone? Hair-pulling? Spanking?

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