The set up:
1. Most free use stories include an aspect of male dominance over females. But in this world, libidos of both genders are equally outrageously high and women are equally likely to initiate and steer a sexual encounter. Also, a lot of free use stories seem to include incest for some reason - that's not included here, go elsewhere if you're looking for that. Finally - in this world there are only straight males and bisexual females. Mention of children is avoided and all characters should be assumed to be over 18.
2. There's no backstory provided here about what future events or alternate history led to the free-use world or that justify how it works, it just is what it is. Maybe some details will come up in the story.
3. In this world people have sex all the time amidst normal everyday activities. Everyone is polite but requests are rarely refused. Clothing is worn for temperature management, decoration or other practical purposes, but not for modesty. It is generally more limited because it just gets in the way of sex.
4. To allow for some creative freedom - recovery periods are shorter. Guys can get harder quicker and cum again sooner. Women can withstand more sex without pain or UTIs etc. Pregnancy and STDs aren't an issue.
------Getting ready------
Alice was looking forward to her day. Her big presentation was scheduled and she was very ready for it - she had led the team closely on this project, they'd worked through every detail together and she was proud of the end result. The clients had apparently flown in last night and the agenda had 2 hours upfront for sex time, and then after lunch they'd dive into the work content. As she showered she realized she was also looking forward to nailing the engineering lead on the client team - he was hot and she'd loved riding him at the interim meeting.
She carefully picked out her outfit - a quarter-cup bra that held her breasts up while exposing her nipples was covered by a formal blazer. Sheer panties covered her freshly waxed pussy and a short pencil skirt finished the outfit. She grabbed some heels and decided to wear her hair up. After brushing on some light makeup and grabbing a quick bite to eat she headed out of her apartment into the warm summer day.
----- The Elevator ----
When she entered the elevator of her apartment building she was pleased to see Jeff from the floor above her. He was off for a jog and was just wearing tight Lycra running shorts to hold his package in place - a package she was very familiar with and fond of.
"Hey Jeff!" she beamed.
"Hey Alice! You are looking FINE today if I may say so!" he replied.
"Thanks!"
"You wearing any underwear under there?" said Jeff with a rye grin.
"Yes - big presentation today" said Alice lifting her skirt to show the sheer panties which did little to hide anything.
"Man, I love your pussy." he said reaching a hand down into the panties and fingering her pussy briefly. "Good luck today! Maybe we can fuck later?"
"Always up for that Jeff as you know" she said cheerily "although I'll probably be pretty messy by then."
"It's cool - I like messy, and maybe we can invite Anne from Floor 2 to lick you clean first?" he said with a wink.
"Sounding better by the minute." said Alice.
The elevator hit the lobby and they both headed out into the sunshine.
---------- The Subway ------
Alice walked to the subway, getting slightly flushed and aroused as she passed a woman eating out her friend at a cafe patio. She was tempted to stop and finger the recipient briefly but she was equally eager to get to work. She grabbed a seat on the relatively uncrowded subway car and settled in for the 25 minute ride to her stop.
At the next stop a guy got on who immediately made eye contact with her. He walked up and pushed his running shorts down exposing a semi-erect penis still glistening from fairly recent sex.
"Hey - mind sucking me clean please?" he asked.
"Sure!" said Alice, lifting his cock and taking it into her mouth. She loved the taste of pussy on a cock. She was slightly disappointed to note that there wasn't a hint of semen on there - he must not have finished with his last partner.
As she continued sucking he rapidly got hard and she starting jacking his shaft at the same time. She noticed a guy a few seats down start watching, get his cock out and start masturbating. Similarly the woman opposite Alice spread her legs and started fingering herself through the access window in her yoga pants. All of this made Alice's pussy flood.
The guy down the way got up, knelt in front of the woman opposite and, without a word exchanged, started thrusting into her. Meanwhile Alice's partner started breathing heavily.
"I'm going to finish on your hair okay?" he gasped.
"Mmmhmm" said Alice as she continued sucking.
Seconds later he shot a first blast into her mouth and then quickly withdrew, she tilted her head and jacked him off onto her brown and blonde updo. She couldn't really feel it on her hair but she swirled his first shot in her mouth and swallowed, savoring the taste.
"Thank you" he puffed. "That was superb."
"Of course." said Alice, leaning back, hiking her skirt and masturbating idly.
"Would you like me to go down on you?" he asked.