all characters are above 18 years of age
I used to work part time at this house as a baby sitter. the child was around 11 or 12. I used to go there every evening for about a month. the parents were rich and had 2 children. the second one was around 20 or 21. i used to go there sometimes in sweatshirts and shorts or with a hoodie and leggings. from the start i knew that the older one (lets call him pete) was upto something. whenever i used to play with the kid he would show up there and just sit there. until one day i noticed him secretly rubbing his pants. we used to have liitle or no conversations at all. i decided to have a little fun and catch him redhanded. and so from the next day i showed up in a more revealing outfit like a sports bra and shorts or just a hoodie with no bra inside. it used to be just him and the kid when i showed up. these days he would try to come close to me which kinda gave me more opportunities. one evening i had wore a green sweatshirt and some leggings and had no bra on. pete tried to come close and grab my butt!. but i got the better of him. i rushed my hands to his shorts and prefectly onto his balls and grabbed then. as he gasped for air he tried to mutter sorry, but only did he know it was to late. i grabbed him by his balls and tok him to the next room and clasped them more tightly and said " i know what youve been trying to do" i told himto stay put until i come back. i put the kid to sleep, he asked wheres pete, i replied hes goin to have a long night. as returned back to the room and saw him hunched near the wall, now he saw me and tried to put his hand infront of his crotch, but still a kick made it there. as he removed his hands i could clearly see the bulge he had in his shorts, i felt joyous seeing that." oh you still wanna have fun huh boy?" i said. at this point his was was red and his body crouched from pain. i unzipped by hoodie half way, so much so that they can be seen.

he was still hard and in pain so i ordered him to take of his shorts or he would regret it. he took them off, and there was his manhood in full glory. i straight up went real close to him and kneed him hard, he gasped for air and fell to the ground trying to convey that he was sorry for waht he did. i bent over and put my behind real close to his face and said " you wanted this right ? too sad" i felt his warm skin when i stood him up from his balls, i warned him about telling this to his parents and the possibility of him losing his jewels he had to oblige with me. for the next hour or so it was me teasing him and making him feel pain for what he did, flicking slapping, punching, grabbing , twisting, kicking, kneeing his balls. at the end his balls were all blue and he was in no state to even utter a word. in the end i am sure he would have learnt his lesson as now although he was half naked and still erect he would try not to be in the range of my hands. for the next couple of days, whenever i got the chance i would flick or slap his ball for fun.

(this was my first story, lemme know if i should post more!)