The science of indecent exposure

As Sarah donned the white lab coat she felt the rough fabric on her stomach and back, looking down, the purple sweater (if you could still call it that) was very VERY different than how she remembered it, her smooth bare skin was completely exposed from just under her tits to the waistline of her jeans. With a small shriek she thrust the lab coat closed her face going cherry red. How did this happen!? When did it happen, what the hell!? "Something wrong?" Sarah turned to face the quiet guy who was now her lab partner. "Oh, uh it's nothing, I'm good". With a small shrug he brushed past her and began grabbing his own safety gear as she quickly did up the buttons on the coat. Walking quickly back to the table her head spun as she tried to work out how she had gotten into this mess, snapped back to reality by her partner dropping some containers full of mystery chemicals onto the table. Resolving to ask the teacher for some spare clothes after class she got back to work. Sarah started mixing chemicals, playing with fire and trying to make something a tad too unsafe for the first day of class. Finally after a few failed attempts the team ended up with a bubbling substance that looked similar enough to what the teacher had made. All they had to do now was drop a small strip of metal into the beaker and see if it dissolved. Moving in close the quiet guy who had been gawking instead of paying attention grabbed a sizeable chunk of metal and held it over the acid. "Wait stop, it cant be a big pie-" *WHOOOOOM* The Mixture exploded in a giant ball of sparks! Recoiling in surprise the young man threw his arms out shoving the mixture off of the table... and right into Sarah. The entire class turned to see a young woman jump away from the unintentional fireworks and begin frantically patting herself down as her clothes smoked and sizzled. Moving quickly both her partner and Miss Green ran over to help. "Oh my oh my, this certainly isn't very good, please check her for burns dear" Hands came up and removed her goggles as she felt the gloves slide off her hands. "I'm going to need you to take off your shoes honey" She kicked her shoes away as Ms Green crouched down to her waist. "Now I'm very sorry dear but these chemicals are real nasty" More concerned about being covered in acid Sarah continued to fiddle with her clothing until she froze, the button on her jeans was undone and the zipper dropped, she looked down in horror as the jeans slid down over her ass and down her legs, pulled by a concerned chemistry teacher. Half of her ass hung out beneath the lab coat as everyone soaked in the intoxicating view of her thick thighs leading to a very wet pair of panties peeking out beneath the coat. Shoving her hands between her legs Sarah bent over at the waist and shut her eyes mortified, unintentionally shoving her ass straight into the quiet dude's crotch trapping him between it and the table. The young man was in heaven, he had a super hot brunette with an amazing ass pressed right up against his dick wearing nothing but a lab coat and socks, the only way this could possibly get better was... And then he saw it, peeking out from the bottom of the coat was a small purple string. Grabbing it he pulled about an arms length before Ms Green pulled Sarah off of him forcing her to stand straight and step completely out of jeans which lay in a smoldering heap. "I know this is embarrassing dear but please understand, this acid could seriously hurt you if it touches your skin so the coat has to go too okay?" "no no no no no, I swear its ok!" She did her best to protest but it fell on deaf ears as Ms Green undid the bottom button of the coat. One by one the buttons were undone as many in the class pulled out their phones. Sarah willed the teacher to stop with everything She had but the opening in the coat grew ever larger showing an increasing amount of her stomach until only three buttons remained. Seeing a chance he would never get again the young man began to scheme, she had walked all the way across the class and only a small part of the top unwound, even if he pulled his heart out now he wouldn't be fast enough to get the whole sweater before she caught on. Instead he crouched down and tied the string to the seat of the stool, if this worked he would be a legend. As the 3rd to last button came undone Sarah's intense underboob came into view, then the 2nd to last revealed the thin wool sweater just covering her nipples still visible through the material despite being much softer than before. Finally the final button came undone and Ms. Green stepped to the side. "You're gonna have to move your hands so I can get this off". Ears burning Sarah slowly moved her hands from between her legs giving those in front a full view of her panties, her arms were pulled behind her back as the coat slid off her shoulders, seeing the opportunity finally arrive her partner did it, using every bit of muscle he had the young man spun the seat of her chair and the effect was instant. Wolf whistles erupted as the top began to rapidly shrink like magic. Sarah glanced down at her chest as her hardening nipples came into view, in a panic she tried desperately to cover her chest but her arms were bound behind her back held in place by a completely unaware Miss Green. "Hold still! I have to get this coat off". In only a few moments the already risqué top was reduced to nothing, her perky C cups and pink nipples on display for all to see. Sarah began to jerk her arms violently attempting to pull them out of the jacket with little effect as the class oogled her tits rocking and swaying with the motion. Seeing miss green struggling the young man stepped forward to "help" grabbing the lab coat and Sarah's arms and pulling it down with a sharp jerking motion. As the lab coat slid over her hands he crouched down hooking his thumb behind the waistband of her panties and pulled them, the coat, and miss green straight to the floor. Sarah threw her hands over her tits the moment they were free and once again shut her eyes giving the class a full view of her wet shaven pussy for a few moments, she ignored the whistles and jeers and simply wished to vanish until she felt the cold air slide over her most private place. Eyes wide she looked down to see her vagina staring back at her and with a loud squeal she dropped into a crouch her pussy mere inches from the young man's face. He could see everything, her soft bare skin and clit presented to him like a book or magazine. Knowing this would happen once and only once he leaned forward and gave the young woman a deep kiss on the lips, running his tongue across her clit, tasting the sweet and salty frustration the panties had provided her earlier. A loud moan escaped Sarah's lips as her knees buckled and she collapsed on all fours, electricity shot through her body as her mind spun. Looking between her hanging tits she realized what was happening and attempted to crawl away, climbing to one knee She attempted a step but was tripped up by the panties at her ankles forcing her face down ass up once again. Finally miss green regained her bearings after being dropped with the coat to see the state Sarah was in, "Oh My word! What happened to your clothes dear?" Moving quickly she secured a spare lab coat and tossed it over the poor woman and helped her to her feet. Sarah swayed still fully exposed from the open front of the coat as She desperately attempted to calm down, her pussy was a mess as juices began to run down her thighs. Unaware of both the kiss and the clear signs of arousal Miss green worked her arms into the coat and buttoned them up moving Sarah away from the center of the room behind a table to conceal her lower half from the rest of the class. "Alright class, due to this unfortunate accident we'll be ending it here for today." "Please collect what things you have and hang around campus until your next classes begin." People moved much slower than usual eyes locked on Sarah who was bright red in the face and clearly in a bit of a daze, one student jogged up to miss green and asked her a question while another pocketed the panties that had slid off of Sarah's legs. After a brief conversation She walked over to Sarah, "excuse me dear I know this is embarrassing but a few of the male students study materials are in this corner of the room, they have promised me they wont look so I have allowed them to retrieve their items while I run to the nurse's office and get you some new clothes alright." Sarah simply nodded, the world slowly coming back into focus and Miss Green left the room.