Based loosely on the ‘Known Universe’ series by Larry Niven.
Tammy was bored. It was the end of the year field trip and all Miss Ferguson could think of for her 2nd grade class was to take them to an old park with a silly ‘town’ made up of garishly painted single-walled ‘storefronts’ and all the usual playground equipment. Tammy was really a first grader but very smart for her age so she’d been moved up. A petite blond with grey-green eyes she was already catching boys’ eyes- especially since her shirts were always a little too big on her. Whenever she leaned forward the top of her shirt would hang low, giving a nice view of her flat chest and pretty pink nipples.
She also had a sweet smile and laugh but she hadn’t done either in awhile, not since her mom had kicked her dad out. Dad could get her to giggle, and until the divorce, so could her half-brother Brian. Brian was a legit second grader, black hair, blue eyes (from his dad) and a bit on the athletic side. He missed seeing his little sister’s smile and wanted it back. So Brian had gotten something off a friend whose dad was an electrical engineer who liked to tinker with new tech: a toy called a tasp.
A tasp was a little device shaped kind of like a Buck Rogers gun, like a sci-fi ray gun in other words. It did the exact opposite of cause harm however- it sent out little blasts of pleasure by stimulating the pleasure center of the brain. Just for a second, just enough to make people feel really good for a moment. But Brian’s friend’s dad had goosed his a bit, adding a few more seconds and making it more powerful. Tammy gasped and stumbled off the swing that she’d been lethargically twisting around on. She couldn’t believe how GOOD she had just felt, she barely had nipples but they had tightened up, and her pussy had felt SO good, it was still tingling!
When her eyes refocused a bit she saw her half-brother hiding in some bushes out of sight of the teachers. Miss Ferguson was just about to call over to her to ask if she was okay but Tammy straightened up and almost went flying over to the bushes as Brian ducked back out of sight. Miss Ferguson figured she saw a rabbit or something and went back to trying to watch 20 other kids. “Brian, Brian,” Tammy whispered in her sweet voice. “Was that YOU? Oh please, please that felt so good, do it again!” Now Brian knew two things and didn’t know two. He knew that he’d never seen such a big smile on his sister’s face as when the tasp hit her and he knew he wanted to see it again. He didn’t know the tasp had been modified and that repeated use would make people dependent on it. So he zapped her again.
“OHHHHH,” she moaned as she dropped to her knees. One hand flung out to stop her fall and the other hand went right to her pussy. Her shorts and panties were in the way, so she ripped them off without even thinking, her mind turned off to all but the pleasure. This time when the effect wore off all she could think of was getting more. Brian in the meantime was shocked by his sister’s reaction. He was also more than a little turned on. Sure, he’d seen her naked at bath time when they were younger but this was something new and exciting. He wasn’t expecting her to growl and grab at the tasp though!
Brian fell back and Tammy’s hand closed on the trigger – with the gun pointed right at Brian! Suddenly he knew what she had felt when it hit her and couldn’t have cared less. All thought had fled from his head as he tore his shorts off to get at his raging 8-year-old hard-on. Tammy in the meantime had zapped herself and dropped the tasp, unable to maintain a grip in her throes of ecstasy. As they both came down from the high (after nearly coming from the high) they saw the tasp on the ground and dived for it. This had a couple of net results: Brian ended up on top of Tammy with his cock against her pussy and the tasp ended up between them with both of their fingers on the trigger. Oh yes, there was one more thing: the tasp (which as you recall was jury-rigged) was no longer sending out jolts of a few seconds per ‘shot’ but was now giving out a steady stream of almost continuous pleasure. But that was slowly and steadily fading as the juice in its power supply ran down. Not that Brian or Tammy cared; their brains were too overloaded with endorphins. As their genitals touched they both started rubbing against each other rapidly, little grunts coming from both of them, their fingers never leaving the tasp’s trigger as it lay pressed between their bellies. By accident, not design, his cock entered her and they both came almost at once. And they kept coming…and coming.
The tasp was almost on its last legs, but they couldn’t have cared less. Sex had become its own tasp to Brian and Tammy and they would have kept fucking forever…until dear, unobservant Miss Ferguson finally realized that two of her charges were missing. Walking around the bush, she nearly screamed at the sight in front of her. She grabbed Brian off Tammy, who struggled like a wild animal to get back onto and into Tammy. The tasp went up with him but in his desperation to reach his sister it fell and gave up the last of its power… aimed right at their teacher…. (oh, and the rabbit too!)