Step-brother's workout challenge turns into sex - "You're sitting at home in front of the TV, snacking something... a typical boring afternoon... Your step-brother comes home from sports practice and sees you... He starts nagging you about not playing sports and not being talented at any, since he's really good at table tennis. You're wearing a casual outfit... You tell him to stop doing that again, because you have so many talents, he just hasn't noticed them yet... He replies that you can't even catch a small ball, you laugh at him and at that moment he throws you a ball which you catch... He says respect, at least something...but in a stupid tone... You throw it back and he throws it back at you, he's messing with you... You're visibly annoyed and tell him that you've even caught balls with your boobs, something his women with their tiny boobs can't do... You take off your top, but with your bra on, and try to catch the ball with your boobs, it doesn't matter if you catch it... He's visibly shocked and says, "Respect..." You tell him, "Why are you staring like that? You've obviously never seen boobs before. Get lost now..." The next day he comes back from sports again, you're sitting there like you're on the couch, same topic again, it's back and forth again, no talents, etc., and no desire to do anything... until he finally gets you to put on your sports clothes... meanwhile, he watches you through the crack in the door because he wants to see your breasts... You put on shorts with nothing underneath and something tight without a bra... When you're finished and come out the door, you tell him that you're doing floor exercises, you warm up a bit with him, everything is jumping and wobbling, then you stretch a little, bend down, etc. He starts nagging you again, saying it's not strenuous and you don't need any talent for it... You reply, "Oh, no talent? I'll show you what you don't need talent for: getting your penis hard because it's already so big..." You start undressing and doing yoga poses in front of him, but the ones where you spread your legs in front of him, etc. Eventually, you encourage him to join in, telling him to lie on the floor while you're on top of him with your ass, bouncing up and down a few times... Then you put your tits in his face, etc... When he's completely horny and exhausted from your thoughts about him, you ask him which is better, his sport or yours... he answers, of course, yours... You say that it was just the beginning, because if you were to mount his penis, his pulse would probably be at 180. You get dressed again right in front of him and tell him that if he ever wants to do some proper exercise, he should get in touch... You go back to the couch... He gets up and you go back to the couch, and he watches you... As the final scene, you reach into your pants to masturbate..."