Ben arrives and watches Emma spank Mackenzie

Mackenzie's eyes widened in terror as Emma turned her head towards the park and yelled "Ben! Come over here!"

She heard the familiar sound of branches snapping and leaves rustling that could only mean someone else was walking into the clearing.

Mackenzie turned to run, she couldn't let Ben see her like this! She only made it two steps before a hard tug at her throat **** her to stop.

Somehow, Emma had managed to get her hand around Mackenzie's leash, trapping the naked redhead in the middle of the clearing.

"Emma please don't do this!" begged Mackenzie, straining to break free and run.

"Sorry Mackenzie, it's time you learned your lesson" replied Emma, grinning as she spoke.

"Oh my God! Mackenzie?" said a new voice. Ben's voice.

Mackenzie screamed. This couldn't be happening! Yet another person that knew her was looking at her naked body.

"I found her hiding in the bushes like this" said Emma.

"That's so... weird" replied Ben.

Mackenzie had instinctively turned her back to Ben as he arrived, she glanced over her shoulder and saw to her dismay that his eyes were fixed on her nude form.

"Obviously she's some kind of weird stalker. She can't handle the fact that we're together so she follows us around doing weird BDSM stuff" said Emma, gesturing to the naked woman as she spoke.

"That is not true!" cried Mackenzie.

"How else do you explain her just happening to be naked and lurking in the bushes right next to where we were sitting?" Said Emma.

"Well, that- that is a pretty big coincidence" conceded Ben.

"No! no! no!" shouted Mackenzie while turning to face her accusers. "I am not a stalker! I got locked out naked and these horribly boys took advantage and made me run around the neighborhood with them. You saw them Emma!"

"Mackenzie you need to stop lying, I didn't see anyone else here when I arrived" with her head turned so Ben couldn't see, Emma shot the naked woman a taunting smile.

"Please you have to believe me!" cried Mackenzie, hopeful that Ben would see through his girlfriend's lies.

It was then that she realized that she had turned to face him and was giving him an uncovered full frontal view of her body.

She squealed and turned to face the other way again.

"I think it's obvious what has to happen now" said Emma.

"It is?" asked Ben.

'Yes, she needs to be punished. It's the only way she'll ever learn to leave us alone" said Emma sagely as if this was an incredibly obvious observation.

"Emma what the fuck!" shouted Mackenzie.

"Yeah, punishing her? That seems a bit ****. Can't we just ask her to leave us alone from now on?" asked Ben.

Mackenzie was glad to hear him come to her defense but it annoyed her that he seemed to have been convinced so easily that she was some kind of bizarre naked stalker.

"So you're siding with her? Choosing her over you own girlfriend?" chided Emma.

"No no that's no-"

"Because that what it sounds like you're doing"

"Okay okay you win, I just don't want to be involved"

Mackenzie's heart sank. Clearly Emma had her boyfriend browbeaten.

"Or maybe he really does want to see her punish me" she thought sullenly.

Emma walked over to a nearby tree stump, sat down, and patted her lap, silently commanding Mackenzie to lay down across it.

“Come here.”

Mackenzie immediately realized what punishment Emma had in mind for her. A chill ran through her.

“No! You can’t. Not that, please!”

“Now!” commanded Emma.

****, Mackenzie looked at Ben pleadingly. Was he just going to stand back and let this happen?! He gave her a small shug but remained silent. Clearly, he wasn't about to step in on Mackenzie's behalf.

Resigned to her fate, Mackenzie walked over and awkwardly lay across Emma. She found it difficult to lower herself into the right position with her hands still cuffed behind her and Emma offered her no help. Soon, she was in position; naked body draped across the other woman's lap with her plump round ass elevated into the air. She glanced over to Ben and saw that his eyes were locked on her protruding rear end. His head tipped to one side in what he likely imagined was a subtle attempt to get a better angle on the space between her legs. Seeing this, she squeaked with embarrassment and clamped her legs together tightly.

Emma shifted around until Mackenzie’s bodyweight was resting on just one of her legs. Then, she adjusted the position of her other leg until her knee was pressing uncomfortably against the redhead’s crotch.

"I can't believe you're actually doing this" muttered Mackenzie under her breath.

With her free hand, Emma grabbed a handful of Mackenzie’s hair and pulled back hard, forcing her head up and back. She continued to pull back until Mackenzie’s back was arched as far as it could go, her chest proudly displayed for Ben to admire.

"Ouch!"

Mackenzie clenched her eyes shut, not wanting to make eye contact with her crush for even a second. This position felt so horribly exposed and submissive.

"You seem to be into this weird BDSM stuff. Try not to enjoy this too much" teased Emma.

Before she could reply, Mackenzie felt a sharp jolt of pain across her butt cheeks and heard a loud echoing slap.

*THWAP!*

Mackenzie squealed in pain and humiliation. The blow landed with such **** it caused her whole body to rock forward until she began to tip off Emma’s lap face first. Her feet kicked out and her arms wriggled frantically in their cuffs. She cried out again and braced for the impact of the fall.

Mercifully, Emma pulled back again hard on the redhead’s hair, arresting her fall but causing her to cry out in pain again.

Mackenzie took a deep breath; this was going to be even worse than she’d feared. Emma gave her ass a quick squeezed before spanking her hard again.

*THWAP!*

The reality of her situation began to sink in. She was completely naked, handcuffed, and being spanked in front of her crush. The level of embarrassment she felt was indescribable.

Emma continued to strike.

*THWAP!*

*THWAP!*

*THWAP!*

"Are you- ouch! nearly done?" asked Mackenzie, interrupted mid sentence by another punishing hit.

"Well now that you've made me lose count, I'm going to have to start again" chided Emma.

Mackenzie wanted to scream in frustrated outrage. The only thing stopping her was the fear that she'd draw more attention from the nearby park.

The brute **** of each impact caused Mackenzie’s body to rock back and forth across Emma’s lap, her breasts swinging like lude pendulums.

The rocking motion had other potentially uncomfortable consequences; with every spank, Emma’s knee rubbed against Mackenzie’s exposed crotch. After a few more hits, the feeling of Emma's knee grinding against her pussy became impossible to ignore.

Soon, the naked redhead blushed with fresh shame as the tell-tale signs of arousal began to manifest across her body. Her breath quickened. Her nipples stiffened. Stifled gasps of pleasure escaped her lips with each hit of Emma’s hand. Worst of all, a familiar wetness gradually grew between her legs. The bound redhead moaned and shuddered, her mind clouded by the warring feelings of stinging pain and teasing pleasure.

As if she had noticed the other women's arousal and wanted to add to it, Emma began to press her knee harder against Mackenzie. Intensifying the shameful feeling that accompanied every slap.

She quickly forgot the stinging in her backside and the shameful knowledge that Ben was watching her punishment unfold. Other sensations overwhelmed her mind, an aching pleasure between her legs. She began to grind her hips into Emma’s knee, blind to her surroundings, oblivious to everything but the waves of pleasure pulsing through her body.

Emma continued to land blow after blow on Mackenzie’s reddened behind. Ben watched on, captivated by the sight of it.

Mackenzie soon began to pant and moan, no longer able to hide her arousal. It felt like pressure was building in her body. An unbearable pressure that demanded release.

“This! Will! Teach! You!” snarled Emma, punctuating each word with a spank.

It was happening. She was close, so close that all her shame and embarrassment had fallen away. She was about to cum. By this point she had begun to sweat profusely. She was no longing moaning or panting. Her mouth was open, but no sound emerged; she was locked in a silent cry of pleasure.

It was then that Emma pulled her knee away from Mackenzie’s crotch, denying her the stimulating necessary to carry her over the line to orgasmic bliss.

Mackenzie bucked and strained, hunting for Emma’s knee, **** to relieve the unbearable tension that had built in her.

"Okay, I'm satisfied" said Emma.

Denied an orgasm, Mackenzie let out a frustrated moan of “Nooo!”.

It was then that she looked up and realized Ben was still gawping at her. She’d been so wrapped up in her own pleasure she’d forgotten that he had been watching her the entire time. Immediately, all the shame and embarrassment that had died away reasserted itself on her mind.

Not content to embarrass her with a spanking, Emma had intensified her humiliation by working her up into a frenzy in front of Ben.

She cried out and tried to rise from Emma’s lap, **** to get away from Ben. How could she ever face him again knowing that he’d seen her naked and getting off on being spanked?!

Unfortunately, in her haste to rise she slipped and rolled off of Emma’s lap, landing hard on the ground.

She lay on her front, wiggling and rolling impotently. She was **** to rise, to get up and run away, but her leg were too weak to lift her. She was also still **** to cum. Mackenzie was tempted to try to reach her cuffed hands around her body and finish herself but knew she'd never be able to forgive herself for doing that in front of Ben.

"See, she's a pervert. How are you meant to discourage someone who gets off on punishment?' said Emma, trying not to laugh as she spoke.

"Umm yeah..." said Ben, distractedly. His attention occupied by the naked and evidently very horny young women writhing and moaning on the ground near his feet.

Emma reaches down and, with a grunt of effort, hauled Mackenzie up into a kneeling position.

"I mean look at her, you can see from here how wet she is" scoffed Emma.

The nude woman knelt on the ground, quivering and moaning, unable to look up and risk making eye contact with Ben or Emma.

"Clearly she'd not going to stop obsessing over you. I think the only choice we have left is giving in"

"What do you mean?" asked Ben, confused.

"I mean" said Emma, reaching out to take hold of Mackenzie's chin and forcefully tilting her head up as she spoke. "If she agrees to leave us alone from now on, you let her suck your cock as a reward".

Mackenzie couldn't believe her ears! How could Emma actually be suggesting this?! She'd been gawped at, ordered around, and utterly humiliated so many times that day. **** to streak a public street! In a dog collar! **** to bend over and spread her legs wide!

But no one had actually tried to make her, or even suggest that she, perform any kind of sexual act on another person.

What surprised and shamed her most of all was, in her haze of sexual frustration, she was actually considering saying yes.