Your step-sister gets home after a long day and has already taken a party treat to enhance her mood and libido. She’s eager to grab her favorite vibrator and just start going at it, until her phone starts buzzing... it’s a friend. They briefly chat before hanging up and she gets right back to using her vibrator... until the batteries die. FUCK! She's horny and frustrated... tries to distract herself and then is dawns on her YOU (her step-brother) probably have batteries in your room. She knocks briefly and you instantly regret forgetting to lock your door... Your step-Sister catches on rather quickly something is Up... you’re hiding something, and when she pulls back the blankets and exposes your throbbing veiny hard cock, she is shocked and excited... already fighting her own urges she can't help but grab and start stroking your cock... You’re shocked and not quite sure what to do, so you dont do anything, you can’t speak. Your cock in your step-Sisters hand feels to good... She teases you and then notices your hiding something else, she assumes it's porn... She teases you and entices you to show her... you give in, and she pulls out a bra and pair of panties?! What the hell... Dirty panties.... wait... these are step-Moms!!? She makes fun of you but your to turned on to care and she is so horny she's blinded by lust for your thick hard cock, shoving your cock between her tits, titty-fucking you, stroking, sucking, then she sits on your face and covers your face in squirt and demands you clean it with your tongue. She can't take it anymore, your step-sister rides your cock until you creampie her pussy, she giggles and taunts you as she leaves, she's always been a bossy, bratty step-sister even in this odd exchange. What you didn't know... is your step-mom came home early and heard you and your step-Sister through the door. She also found her underwear and bra hidden beneath your bed, and a few days later she decides to confront you about what she heard and what she found. She’s hesitant at first, shy even... but then she gets sterner, and calls you out... and then explains how natural it is to be ...well, curious... it is human nature after all... Would you like to be curious with your step-Mother? Her tits are out, she's exposing herself to you, encouraging you to fuck her, you can't resist and start fucking her missionary, doggy until you fill her pussy with a massive creampie...