Dan yawned and stretched his arms above his head. He hated coming into work on the weekends, but at least it was quiet and he had the department to himself. Plus, the roads were quieter and he could cycle into work and get a bit of exercise. He was lucky that weekend working was paid at double time; he only had to work in the morning, but got the same wages as when he did a full day shift during the week.
'Roll on lunchtime...' he thought, as his stomach rumbled.
He reached in his bag to pull out an protein bar. He would need to refuel for the cycle home. His coffee was cold, so he wandered along the corridor to the kitchen area to put it in the microwave. He absentmindedly glanced in the offices along the corridor as he walked past. Two doors down, the door was ajar and he couldn't help noticing a handbag on the floor under the desk.
'That's Gabby's desk,' he thought. 'I better send her a message to let her know about her bag.'
He made a mental note and continued to the kitchen.
While he was waiting for his coffee to be heated, he chewed on the chocolate and nut protein bar and his mind wandered.
'What if her phone is in the bag? Then there would be no point sending a message. Maybe I should check. Would that be inappropriate? Maybe I should just leave it? If it was my bag, I would want to know where it was. I would need to know.'
The microwave pinged and he took his coffee out and started wandering back to his room. As he passed Gabby's office, he paused. He made a decision and entered the room, putting his coffee on the desk. He crouched down and unzipped the handbag gingerly. He took a look inside. There didn't seem to be a phone, but the bag was quite full. He reached his hand inside and shuffled things around with his fingers. Definitely no phone. His fingers grasped something light and lacy. He withdrew his hand.
He held up a black, sheer thong.
He held his breath and could feel his pulse racing. He felt a stirring in his trousers. He thought of the owner of the sexy underwear in his hand and his erection swelled.
Gabby was in her mid twenties, tall, slim and brunette, and undeniably gorgeous. Dan was at least 15 years older than her, but that hadn't stopped him noticing her in the office. She had the most perfect bottom; pert, shapely and begging to be squeezed. Yesterday had been warm and she had come into the office in light, cream-coloured trousers that tightly hugged the contours of her backside. It had been clear that she had been wearing a thong that day as well, as there was no panty line creasing her buttocks and a tiny black triangle could be seen through the material at the top of the cleft between her cheeks. Dan recalled having to take himself to the bathroom to 'sort himself out' after seeing her.
His erection throbbed.
'I wonder if this is the same thong she was wearing' he thought.
An urge to raise the underwear to his face and sniff was irresistible. The thong smelled faintly of perfume and there was a musky, earthy smell in the gusset, where it had been in contact with Gabby's pussy. It was intoxicating, and Dan fidgeted his boner through his trousers.
'I'm going to have to do something about this,' he thought and, the thong still in his hand, he headed back to his office.
*******************************************************
Gabby was furious with herself. She could not believe she had left her handbag at work.
'Thank god I had my phone in my jacket,' she thought.
Her office keys were in her handbag, so she couldn't have nipped back to the office last night and let herself in. Her security badge, which was also in her jacket, would have opened the swipe access, but after hours, when the office was empty, the doors were secured with a second lock, that required a key.
She was not normally the type to forget things like this, but she had been a bit flustered yesterday afternoon and had left work in a bit of a daze.
The source of her discombobulation was a conversation with her colleague, Sarah. They had both joined the department at around the same time and were about the same age, so naturally developed a kinship. They would often stop at each other's desks for a catch up.
"Did you see Dan, after he spoke to you earlier?" Sarah had whispered, excitedly.
"No," replied Gabby, "Why?"
" He was totally checking you out! He could not take his eyes off your backside as you were walking away! I swear he had a boner in his trousers!"
"Are you serious?!" exclaimed Gabby. Dan was nice enough and was quite good looking, but he had to be at least 10 years older than her.
"I'm serious! And he was not carrying a small package, if you get me!" Sarah wiggled her eyebrows suggestively and they both giggled. "But there's more,"
"More?"
"Yes; I watched him go straight to the bathroom after seeing you and he didn't come out for over 10 minutes."
"What's so significant about that?!" asked Gabby.
"Well, 'someone', AKA me might have done a bit of stealthy spying on him in the bathroom!"
"Sarah!" said Gabby, "Did you follow Dan into the bathroom?!"
"Not completely! I just opened the door to the gents and had a listen!"
"And...?!"
"What I heard, confirmed that he was doing what I thought he might be doing."
"Which was...?!" Gabby was getting frustrated with Sarah's tiptoeing around the point.
"There was unmistakable sounds of him jerking off! And given the sequence of events, the logical conclusion is that he was thinking of you while he did it!" She finished, dramatically.
Gabby went red and could feel herself getting hot. She was surprised to feel flattered and a little turned on by the thought of Dan thinking of her, whilst he pleasured himself. She could feel a bit of heat in between her legs and pressed her thighs together.
Sarah left to go to a meeting and Gabby sat in her desk chair idly musing on what she had heard from her friend. She couldn't get it out of her head and was picturing Dan, with his hand around his erect cock, rubbing furiously. Her pulse quickened and she could feel some dampness in her panties. With her light coloured trousers, any wet patch would be clearly visible, so she took herself to the bathroom to try and deal with this. She stepped into the cubicle and dropped her trousers. Her thong was soaked. She slipped her trousers off her ankles and then took off her thong. It was damp in her hand and she could smell her own arousal. She stood there, naked from the waist down and her fingers wandered between her legs. She was so wet. She put a foot on the toilet seat and slipped two fingers inside. She used her other hand to rub her clit furiously. After thirty seconds of slamming her fingers in and out and rubbing her clitoris, she felt her orgasm well up inside. She bit her lip to stop herself from crying out and her knees shook as she came in a tsunami of pleasure. She stood there for a few minutes, panting as she returned to reality.
Her thong was too wet to put on back on, so she put her trousers back on without underwear. She stuffed it into her handbag and hurried back to her office. It was nearly home time and she had to send a quick email before leaving.
She felt a bit shaky and agitated as she sat down. She had never cum that hard before and her whole body felt like it was quivering. She struggled to concentrate as she wrote her email, but just about managed to get it sorted.
Shortly after that, Gabby and Sarah were heading out of the building together. It wasn't until she got home later that she realised she had forgotten her handbag.
**********************************************************
The good thing about being alone in the office was that Dan could wear what he wanted. If it was hot when he was at work on a weekend, he would often sit in just his boxers.
Today, after finding Gabby's thong, he definitely felt hot.
As he walked down the corridor, he took his t-shirt off, over his head and began undoing his belt. He wasn't worried about being found out; nobody would come into the office on the weekend unless they had to and, as it was nearly time to go home, if he was caught in a state of undress, he could probably explain it away by saying he was getting changed to cycle home.
Once in his office, he slid his trousers off and stood there, naked, with Gabby's thong in his hand. His swollen cock stood proud in front of him. He looked down at it. He thought it was a reasonable size and above average, and was quite thick at the base. He had taken to trimming the hair at the base of his shaft, which made it look bigger and felt good in his hand. He was uncircumcised and he loved the sensation of retracting his foreskin slowly over his purple head, when it was swollen and hard.
He did that now.
Some precum had leaked from the tip, providing slippery lubrication. His hand slid up and down his shaft with ease. He was so turned on. He had wanked himself off yesterday, thinking about Gabby, and he was about to do the same today. He sat down in his chair and put his feet on the desk. His legs were spread and he revelled in the sensation of being naked at work. He continued to stroke and raised the thong to his face, inhaling deeply. He fantasised about seeing Gabby's arse while wearing this and watching her take it off. He knew that would never happen, but he indulged himself in the fantasy while he masturbated.
He left the thong on his face and moved his other hand to grab his balls. He used his feet to spin the swivel chair around slowly as he wanked. Through the lacy fabric of the thong he could see his desk, the office door, the bookshelf on the wall, the window and then the desk moved into view as he spun around.
He continued to revolve slowly as he stroked his cock. It took him several revolutions to realise there was someone watching him through the open door.
*********************************************************
The buzzer of the swipe access sounded, to indicate that the door lock had been released. Gabby sighed in relief. She didn't know who had drawn the short straw to work the weekend, but at least she could get into the building. She moved quickly down the corridor to her office. Her bag was there, where she left it, under her desk. It was then that she noticed a cup of coffee on the desk.
She touched it, it was barely warm. She figured that it had been left there by whoever was in the building, but why they had been in her office, she had no idea. She stooped to pick up her bag and noticed the zip was undone. She didn't think she had left it like that. She looked inside and didn't notice anything missing at first glance; her keys, purse and credit cards were all there.
As she turned to leave, she stopped short. She remembered putting her thong in the bag yesterday and hadn't seen it when she just looked. She put her hands in the bag and scrabbled around. It definitely wasn't there.
She looked at the coffee cup again and came to the inevitable conclusion that whoever was in work today had seen her handbag and had a snoop inside, and had taken her thong out. She wondered who it was. She also felt a slight thrill at the thought of someone discovering her sex-soaked panties, although she recognised that she should be annoyed by the invasion of privacy.
She quietly slipped out into the corridor. Most of the other office doors were ajar, so there were no easy clues to direct her to where her mystery panty stealer might be.
She took a couple of steps, trying to keep as quiet as possible. She was glad she had worn her trainers as the cushioned soles barely made a sound. She stopped and listened. She could hear some noises from Dan's office.
Dan?!
