Voyeur or prey?

As Tammy left the office, she thought she heard a girl whimpering. Her journalist instincts told her to investigate in case she needed help. Tammy followed the noise to an alleyway. She hid behind a dumpster and peeked to see what was going on. She saw a girl dressed in a school uniform, and it looked to be from the all girls school down the street

Tammy gasped as she realized what the girl was doing. The girl was alone, but had her blouse open and her bra pulled down, showing her bare breasts as they heaved. Her hands were under her skirt, which was pulled up to show her white thong was pulled aside. Her fingers were dancing over her wet pussy. Her left hand rubbed her labia as her right massaged her clit. She tried to stifle her moans, and they came out as whimpers and grunts.

Tammy hid once again, not wanting to be caught watching a girl pleasure herself in the alley. However, she wondered why the girl chose this alley and why in public? She looked again and this time looked at her surroundings. No one was taping her, no one was making her do this. Then she saw it. On a windowsill, she saw a phone with its camera facing the girl, likely getting everything in the shot. Was she filming herself? Was it for a boyfriend? She was lost in thought when she suddenly heard a gasp and a noise.

Tammy looked over and saw the girl had noticed her presence. She cursed herself for not paying attention, but she couldn't deny what she saw now. She stood up and managed a nervous smile and wave as the girl let her skirt down and pulled her blouse closed.

"Um, I'm sorry I interrupted you. You're clearly embarrassed. I'll go and I'll never say anything about it, I swear." Tammy said and turned to leave.

"Wait!" the girl called out, making the woman turn around and look at her.

"I wasn't doing this by choice. I'm being set up. Maybe you can help me?" the girl explained.

"I'm a reporter, I can help you. Who's doing this to you?" Tammy asked.

"I don't know. They know my biggest secret, and they said I had to obey or they'll tell everyone! My friends, family, the entire school. I couldn't let that happen." the girl said.

"So, how can I help?" Tammy asked.

"They want me to have an orgasm on video for them, but no matter what, I can't finish. It's taking too long and I'm afraid of getting caught. Good thing you found me. You can do it in my place! Your body looked like its close enough to mine they won't know the difference!" the girl explained.

"Wait, you want me to...out here right now?"

"Please, I don't have a choice. If I can't orgasm on video, they'll ruin my reputation!" the girl pleaded.

Tammy saw the desperation in the girl's eyes. If she were in the same predicament, she would have asked the same. But could she really touch herself in front of a girl she just met? She wanted to help...

"Okay, I'll do it. But make sure you don't see my face, OK?" Tammy said.

"Oh, and you need to wear my uniform. If they notice the clothes are different, they might not buy it." the girl said, shrugging her blouse off her shoulders.

Tammy blushed. Not only was she to masturbates, but she had to strip naked first! She took off her jacket and draped it on the dumpster. She unbuttoned her blouse as folded it before placing it on her jacket. The same happened to her sensible, modest skirt. The girl was already naked as Tammy unleashed her breasts from her bra. The girl handed Tammy her bra and then repeated it with her panties.

"Oh good, you shaved too. They won't ask about it then." the girl commented as Tammy pulled the panties up, soaked in numerous bodily fluids.

Tammy pulled the blouse on and decided not to button it, and pulled the skirt on. It was a tight fit, but she was able to do it. She smoothed out the outfit and waited for an appraisal from the girl.

"It looks good enough. Now tug the bra down so your tits are visible. Pull the panties to the side, and you know what to do." the girl instructed.

Tammy blushed and nodded. She adopted the same pose the girl was in when she first discovered her. She was surprised to feel how wet she already was. As her breaths became heavier, she closed her eyes to block out any reminders of where she was and who she was doing this in front of. However, the fact she wore a school uniform triggered a fantasy that she was in front of a classroom fingering herself as her classmates watched. Her teacher was nowhere to be found. She heard the squelching sound of her dripping pussy as she felt her need for more.

Her fingers slowly entered, first one, then another passed her slippery hole and felt the warmth inside. As she explored further, her hips began to thrust in time with them. She palmed her clit with the same hand and moved her now free hand to her left nipple, pinching and tweaking it, sending shockwaves of pleasure through her. She didn't realize how much she was moaning until she let out a loud cry as her climax took over. She stifled her voice and tried to control her breathing as she felt the waves of her orgasm wash over her. Her hands didn't stop, drawing as much pleasure from the sensations as possible. Eventually, her hands left her body and her arms hung loosely as she caught her breath. She was brought back to reality when she heard a voice.

"That was incredible! I almost had to touch myself, that was so hot! Thank you!" the girl said.

Tammy opened her eyes and looked around, relieved no-one but them were present. She blushed as she remembered what she did and why. As she stood up, she saw the small little finger juices on the ground as well as the streaks of moisture down the inside of her legs. Then she remembered her borrowed clothing.

"Oh, I should get changed." Tammy said.

"You can keep the panties. I'm sure you understand." the girl giggled.

It was true, they were now coated in her fluids and probably wouldn't be comfortable wearing anymore. She kicked them off, not wanting to wear clammy undies that reeked of her sex. She placed them on the dumpster next to her clothes. The blouse, skirt, and bra were given back to the girl, who out them on like she was at home.

"I guess I should say I'm glad I could help you." Tammy said.

"It's more then what I hoped for. I'm Emma by the way." the girl said offering her hand.

"Tammy." she said, taking it.

They shook hands, and after they let go, Emma smelled her palm. Tammy blushed, knowing her scent was still on her hands. Email smiled and walked away, taking Tammy's panties from the pile of clothes.

"Fair trade!" Emma called back as she slipped them into her pocket.

Tammy stood there naked for a minute before putting her clothes back on. She held her jacket as she was still sweaty from her performance. She felt odd going without panties, and remembered Emma's that were now hers. She picked them up and smelled them. She smiled and placed them in her jacket pocket and went back home.

Back on the street, Emma hit "send" on her phone. A moment later, she received a reply.

Good. Very nice indeed.

"So, we're done?" Emma texted back.

For now. Tammy has no idea what's in store for her.