Omg step-bro, you are 20 minutes late!! You mouth off a bit, and I am clearly offended-- you'd promised to drive me because you LOST a bet!! You bet that I couldn't kick your ass, and I did, and now you're supposed to do everything I ask of you for three whole months! You aren't keeping up with your end of the bargain though, you are always so late for everything! I am so tired of it, I won this bet because I'm stronger and I've got NO problem demonstrating that again! I may be your step-sis but I'm way stronger than you! I've got the good genetics, I have this big sturdy frame and I'm natu...

Omg step-bro, you are 20 minutes late!! You mouth off a bit, and I am clearly offended-- you'd promised to drive me because you LOST a bet!! You bet that I couldn't kick your ass, and I did, and now you're supposed to do everything I ask of you for three whole months! You aren't keeping up with your end of the bargain though, you are always so late for everything! I am so tired of it, I won this bet because I'm stronger and I've got NO problem demonstrating that again! I may be your step-sis but I'm way stronger than you! I've got the good genetics, I have this big sturdy frame and I'm naturally strong! You've got scrawny little arms, but I've got natural muscle even when I'm not working out! I've always been able to kick your ass, and I'll always be able to kick your ass! You decide to be mouthing off to me, so alright-- fine, I'll bet that I can beat your ass! That wasn't a one off, I'll do it again. As I talk smack to you, you start to regret mouthing off- you start to get nervous that you'll just lose again. I laugh, of course you will!! This time we are betting your FURTHER servitude, and free use of your body! You are unsure what that means, but you reluctantly agree... Your sure that she won't win again, right? I explain the rules- whoever pins the other for the count of ten wins. You try to take it back, but I say, "no takesies backsies!" I count down and say "LET'S WRESTLEEEEE". Soon, you find yourself pinned to the desk under my big thighs. You try your hardest, but you know I'm about to win the title of definitively strongest- forever! This is the title that proves I'm the strongest of us two step-sibs, but no matter what you try-- you are firmly under me, pinned, helpless. As I count down, you know your days are numbered. You're pretty upset about this, but as you stare up at your step-sister's cleavage you start to uh, perk up. I bring up that there's no other way this could have ended for you, you stood no chance against my strength. I'm stronger than you, taller than you, smarter than you-- I flex while still holding you down, no problem. What else do I have that you don't, hmm? Ah, yeah-- my cock is bigger than yours too! I pull it out, demanding that you hold your itty bitty cock next to my big one. I kick your legs open, and I hold them up so I can access your hole-- that's right, free use means I get to use your body whenever I want for whatever I want! Don't you like that? You know you actually love how much stronger than you I am, I am so strong and you were so stupid to challenge me... and now, you're getting deep dicked! I fuck you like the little bitch you are, talking about how much better I am than you, I flex while I fuck you-- then I pull out to come on your face! You're my sweet, sweet prize! You're the step-sis now, in all those porns the step-sis is always getting into silly trouble and being an airhead. Well, that's you! My little airhead! You aren't meant to be strong, I'm meant to save you from all your silly situations you get yourself into and then fuck you as my reward! Don't worry step-sis, I'll get you out of the dryer when you're stuck-- and I'll fuck you all day long!