A collar and a leash.

Emma was shivering with need, but the thought of David putting his huge cock inside of her was filling her with anxiety. The twins were right, this was just like the mechanical bull where she'd gotten really excited about something that actually scared her.

She nodded agreement.

Holly smiled reassuringly. She went to the closet next to the bed and opened it. While she was searching through a big box on a shelf, David and Rose were taking things slow. He was still lying on top of her, but instead of thrusting, he was just kissing Rose's neck. She was arching her back to push her body towards him, and the look of delight on her face showed that she was quite happy with having his cock fill her up as he kissed her.

Holly came back with a pink collar that had a heart shaped lock on the front. She said, "I think your problem is that you're overwhelmed by the choice you have to make. This collar represents giving up that choice. When you wear this collar you don't have to decide anything, or to think about anything, someone else has that responsibility. Do you want that?"

Emma bit her bottom lip. She was on her knees, both hands rubbing her twat somewhat ineffectively, and shaking with need for a cock that she seriously thought might be too much for her. She knew the right answer, but she didn't want to look too eager. "Well... okay."

Holly shook her head patiently. "No, that's not good enough. This is a big decision. If you aren't enthusiastic about it, then it's probably not the best idea."

Emma felt ****. "Yes, I definitely want it! I'll take the collar!"

Holly, gorgeous, naked Holly, leaned over and put a finger under Emma's chin. "You'll have to show more enthusiasm than that."

"Please!" shouted Emma louder than she'd meant to. "Please put the collar on me!"

Holly had a strange way of grinning that seemed to be hiding something, but still seemed sweet. "If you're going to beg for a collar, shouldn't you beg the way a collar wearing animal would?"

Emma was shaking now. She reluctantly pulled her hands away from her wet pussy and held them in front of her like a begging dog. She whimpered and whined, then said, "Please make me your little doggy! Please!"

From over on the bed, Rose cried out with a string of creative swears as David resumed forcibly fucking her.

Holly patted Emma on the head and said, "Okay, I think you're ready." She placed the collar around Emma's neck, then locked the little heart shaped padlock.

As soon as she felt the pink leather pull tight around her neck, Emma felt better. The shaking stopped, and she felt a sense of peace. She felt even better as Holly attached a leash to the color. This felt good. This felt right.

Holly looked down at Emma and said, "Oh, look how cute you are! That's what a puppy should be, cute!" She lightly tugged the leash to pull Emma's head down. "Now, lick, puppy. Go ahead, lick!"

As her head was pulled towards Holly's feat, Emma realized that she was really doing this, and she didn't mind. This was what Holly wanted, and Holly was in charge. She saw in the dim light that Holly's feat were as perfect as she had imagined, with her perfectly manicured toenails painted green. She stuck out her tongue and licked the perfect little toes. She wished she could be licking Holly's sweet pussy instead, but Holly knew best.

After a couple of minutes another pair of perfect feet appeared beside Holly's, these with red toenails. Rose must have finished up with David. Emma's leash was passed to the side, and then jerked a bit harder than when Holly had it. Emma followed the tug and moved her head to Rose's feat so that she could lick the other twin's toes.

"Oh my god, she actually accepted the collar," said Rose.

"I told you she would," replied Holly.

Two sets of hands ran through Emma's unruly, black hair, petting her.

After a minute, Rose said, "Hey David, could you come here for a minute?"

There was a loud groan from the exhausted man, but then he said, "Sure, no problem."

He stepped between the twins so that all three of them were standing in front of where Emma was kneeling, looking down at her. Rose tugged the leash, and Emma looked up at them. She realized that this should be intimidating, but the collar made her feel secure.

"David, we're sorry you didn't get to fuck three girls tonight like we promised," said Rose.

"That's okay. You can make it up to me."

"Yeah, we'll definitely find a way to do that!" said Holly. Then she turned back to Emma. "For now, let's take care of this. Emma? We have some questions for you. Answer honestly, and you can sleep at the foot of the bed like a good little pet."

Emma nodded. She held her hands up in front of her in the begging dog position. She really wanted to jill herself more, but she felt that this is what the twins wanted her to do.

Holly reached over and stroked David's deflated, but still impressive cock. "Do you want this cock inside you?"

Emma nodded vigorously. "Yes!"

Rose smiled, slightly more sinisterly than her sister. "Do you think you deserve to get this cock?"

Emma almost answered one way, but stopped and **** herself to answer honestly. "No, I don't deserve it."

Holly asked, "Who deserves this cock?"

"... You two do."

"Why is that?" asked Rose.

The floodgates burst. "You're so hot! Both of you! Even in high school, I'd sneak glances at you do when you walked by! You're curvy and stacked and pretty and everything I'm not! I'm so short and flat, but you're tall and hot! You deserve a really big cock, not me!"

Holly bent down and placed her hands on Emma's cheeks. She held her cute face close to her own sexy face, so close Emma wondered if they were going to kiss. Then Rose walked beside Emma and reached down. She slid her hand over Emma's ass, across her belly, and down to her dripping wet pussy. She began to massage Emma's moist opening as her sister continued.

"You're never going to feel David's wonderful cock inside you, or anything even remotely close. However, we know you like to watch his big dick satisfy us. Do you want to be our pet so that you can watch us as often as you'd like?"

Emma's mind turned to mush at Holly's incredible offer and Rose's fingers working her clit. "Yes! Yes, please make me your petttttTTT!"

She came hard, spraying on the floor. Both the girls stroked her head, then turned back to lead David back to bed. Of course, they pulled Emma's leash along with them, leading her to the foot of the bed as they'd promised. Holly got a yoga mat and unrolled it for her.

"We'll get you something nicer to sleep on tomorrow. This will do for tonight."

They tied Emma's leash to the bedpost, then climbed into bed with David. Emma couldn't see them, but she could hear the gentle kissing, and she fell asleep to the sound of slurping noises and one of the twins saying, "Oh god, your tongue is great, too!"