"Okay, Anna, could you be a little gentle-AH!" Kristoff yelped when he felt Anna give his ass a sudden smack. Despite her petite size, the Princess was deceptively strong. A small, red handprint was shining brightly on Kristoff's firm ass cheek.
"Relax, honey. I promise you're going to enjoy this." Anna purred into Kristoff's ear as she settled into position. She was kneeling directly behind Kristoff, who was laying face down on the bed with his ass raised in the air. Anna gripped Kristoff's ass cheeks and spread them wide, exposing his small, tight asshole. A harness was strapped tightly around her waist and over crotch was a leatherbound dildo, the exact size and shape of Kristoff's cock.
Anna had taken Kristoff's thick cock in her ass, mouth and pussy ever since their relationship became more intimate. As much as she loved the feeling of his thick shaft pounding her silly, she had wondered what it would feel like to be on the other end, to give instead of receive. So, she approached Kristoff about the possibility of having his petite girlfriend fuck his ass with a dildo.
Kristoff was, admittedly, a little hesitant at the prospect. But, the cute, pouting look on Anna's face melted his resistance. He agreed to give it a try, and Anna squealed in delight, kissed his cheek and took off running.
A few days later Anna proudly showed Kristoff her dildo, made to resemble Kristoff's cock almost exactly. Kristoff could only wonder if she either instinctively knew his penis measurements, or if she measured him when he wasn't aware of it.
Now, here they were, with Anna ready to tear into Kristoff's ass and take his anal virginity. She didn't want to hurt him so she decided to do what he did to her the first time they tried anal. Keeping one hand on Kristoff's butt cheek to keep it spread open, Anna took her other hand and stuck her fingers in her mouth, lathering them in her saliva.
Once they were nice and wet Anna proceeded to start rubbing her wet fingers against Kristoff's tight, winking hole. She went slow at first, only using her thumb, rubbing the hole gently to loosen it up so she could slip a finger inside. She started adding more of her fingers, stretching it nice and wide. Kristoff was groaning underneath her, his fingers grasping onto the sheets tightly. He couldn't lie, it actually felt pretty good. He wondered how it would feel when Anna put the dildo in.
Satisfied that Kristoff's asshole was now nicely lubed up and loosened, Anna gripped her dildo firmly, wiping the rest of her spit on it. She began easing it into Kristoff's ass. Kristoff hissed at the feeling of the invading dildo. Anna cooed softly to Kristoff, rubbing his back while she put more and more of the dildo into his ass. Soon, her ass was filled to the brim with Anna's fake shaft. Grasping his hips, Anna started thrusting back and forth, fucking her burly mountain man up the ass.
Kristoff grunted, groaned and gasped as Anna quickly found her tempo and started picking up speed. It hurt at first, though Kristoff was determined to ride it out. But, after the initial pain subsided, pleasure started to spark within him. The head of the dildo hit just the right spot on his prostate and Kristoff moaned aloud. His cock was hard as stone and grinded against the bed. Anna smirked in triumph. She knew Kristoff would like this.
Kristoff couldn't hold on for long as he felt his ass be fucked wide and loose. It didn't help that Anna would smack his ass cheek or tug on his cock and balls to hurry his release on. Soon, with a ringing cry, Kristoff came, shooting his load over the sheets. Kristoff collapsed face first onto the pillow with his ass sticking straight up into the air.
It took some effort, but Anna tugged her dildo free of Kristoff's anal cavity and looked down on her boyfriend, proud of her accomplishment. Anna got the feeling this was going to be a regular bedroom activity for them.
Good, she had a couple of bigger dildos she wanted to try out.