Margo strolled onto the deck, her expression a mix of serenity and smugness. Serene because she loved this old lake house. Smug because she had just pulled off the impossible. 

The cottage had belonged to her grandparents, and it was the epicenter of her childhood summers. She, her sister, Alex, and their cousins swam all day, caught lightning bugs at twilight, and sat around the fire pit giggling and eating s'mores late into the night. 

Things weren’t quite as carefree now that she and Alex were chasing after five kids – all under the age of 11 and all perpetually in need of food, sunscreen, or both. It was fun watching them make their own memories but exhausting. 

All of that seemed far away right now, though. All she could focus on was the delicious ache deep down inside of her that reminded her of the incredible quickie she and Tom had miraculously managed just minutes earlier. Hence the smugness. 

Usually, sex was off the table during their annual trips to the lake. But this year, Tom had been on a three-week business trip and arrived home just in time to jump in the car and start the drive up north. They hadn’t had sex in nearly a month, and they were desperate. But in that tiny house with paper-thin walls and people crammed into every corner, their prospects weren’t good…until this morning. 

Mom and Dad had gone shopping and the kids were down at the pier with Alex and her husband, Bob. Seizing the moment, Margo pulled Tom into their bedroom. No words were exchanged; they both understood the assignment.  

What followed bore no resemblance to their usual sex life. This was fast, feral, and ferocious. Tom was hard as tempered steel, and he took her from behind, pounding away with abandon. She slammed her hips back to meet him while furiously fingering her clit. Both orgasmed explosively, finishing with  no time to spare, as their six-year-old son walked in just moments after they had finished. They both grabbed the nearest clothes and acted as if nothing had happened.

 But Margo’s post-orgasmic glow and the bruises on her hips from Tom’s grasp confirmed that it hadn’t been a dream. They had done it, and nobody was the wiser.

 “Was it good?” came Alex’s voice from behind her. 

“I’m sorry, I didn’t see you sitting there,” Margo said with a start. “What did you say?” 

“Was it good? You know, the sex,” Alex said, smirking. 

“I beg your pardon!” Margo replied indignantly. 

“Oh, come off it. I could hear the bed bouncing and scraping across the room. Dad will have a fit if you scratched up the floors.”

 Heart pounding, Margo thought fast. 

 “Oh, that,” she said with a giggle. “Yeah, Tom thought he lost his Amex card. We tore the bedroom apart looking for it. The damn thing fell behind that giant dresser. You must have heard us moving it.” 

“Oh, that must have been it,” Alex said, rolling her eyes. “But why were you screaming, ‘Fuck me’”? 

“I stubbed my toe and yelled, big deal! Forgive me for bruising your virgin ears!” Margo retorted, hoping that going on the offensive might help her change the subject. 

“Damn, how many times did you stub your toe, because…” asked Alex. 

“A couple of times, okay!? What’s it to you?” Margo shot back.

“Well, it’s just, you know, all of the noise, and the yelling, and how your hair looks like you just rolled out of bed, and your neck and chest are all flushed, and…” 

“We’re at THE LAKE! You know what the wind does to your hair up here. And forgive me for not using enough sunscreen. So, I’m a little sunburned, get off my ass already,” Margo snapped as she frantically pulled her hair back into a ponytail. 

“Yeah, the wind is a bitch,” Alex said absently, playing with her own hair, which barely moved in the light breeze. “But that doesn’t explain your nipples. You don’t usually see high beams like those unless you’re on the highway at night.” 

Margo reflexively crossed her arms to cover her breasts.

 “For your information, Sherlock, I just came from the living room. It has the only working air conditioner in the house and Dad has it set so cold that I swear, a butcher could hang meat in there. So, forgive me if my girls have their party hats on!” Margo sputtered. 

 She needed this conversation to end before her prim-and proper-image was tarnished. “I don’t at all appreciate what you’re insinuating. So, if that concludes the interrogation, can we just drop it?” Margo hissed. 

“Fine. I apologize. Far be it from me to question Princess Perfect,” Alex said, her voice dripping with mock sincerity. “But I think you should know that the glob of cum running down your leg is calling you a liar.” 

Margo’s eyes bugged out as she glanced down to see that Alex wasn’t bluffing. Defeated, her shoulders sagged, and she absently used two fingers to scoop away the telltale blob. 

Locking eyes with Alex, Margo let out a sigh. “Well, since you asked…” she said, pausing to suck her fingers clean. “The sex was fan-fucking-tastic.” 

A beat or two passed, with the sisters never breaking their gaze. 

“Still quite the slut, I see,” Alex said with a grin. 

“Said the little whore,” Margo replied, with a smile. 

“Keep an eye on the kids, would you?” Alex asked. Margo nodded.  

“Bob!” Alex called to her husband. “Get your ass up here, I think I’ve lost the credit card.”