I'd kind of let this event drift to back of mind over time, but in going through some old pics, it's now back fresh...
We celebrated KK's 42nd birthday in Vegas. As a "sure thing," we decided to book an escort, a pro, for her - instead of luck of the draw in the casinos and bars.
KK picked a guy that I thought was uncharacteristic for her, based on my own experience of her and men she found attractive - this guy was on the short side, maybe nicking six foot in height. Bald, like polished head, porn 'stach, kind of hairy, only a bit larger than average cock, not fully shaved, with sort of a
lightweight muscle dude physique...
I did not critique her choice, or dive into the "why." He showed up on the dot at our room, was a match to the photos on the booking site, and we went ahead with the encounter. The guy wasn't rough-rough, if that makes sense, but he was a lot rougher with KK than I've ever been, or would be. She got many ass cheek slaps, lots of vigorous finger-fucking, nipple squeezing, biting, all stuff she was guiding the dude to give her - she wanted it rougher than usual, that was clear.
As things progressed, there was some rougher stuff; hair-pulling, mouth-fucking (both fingers and cock), light choking/breath play, and some kind of acrobatics - legs high in the air, held by her ankles, and finally some really deep, incredibly vigorous ass fucking.
It was disconcerting for me in many dimensions. Physically it left KK sore, with a few bruises and welts, but she seemed very happy and satisfied with the way the encounter went down. In looking at the pics, her facial expressions in a couple of cases were indistinguishable from pain or intense pleasure.