Your girlfriend is spending the night, but your friends came over for a Smash Bros tournament, so you told her to wait in your room. Yeah, she seemed disappointed but bros before hoes, right? She knows that. When you go to check on her, though, you hear some weird noises. Is she watching porn?? When you peek into your room, though, you see your step-mom...oh, my god! Your step-mom is wearing some kind of strap on or something, and she's stroking it while she plays with your girlfriend's pussy! You're transfixed. You want to scream at them both but you can't say anything. you can't move. You're glued to the spot, watching as your step-mother puts her fat cockhead against your girlfriend's pussy and pushes forward, dildo-fucking your girlfriend! You can feel your cock rise in response to the scene before you, despite your anger. You watch as she thrusts into your girlfriend, the both of them moaning and cumming, before your step-mother catches sight of you in the doorway. She rushes to cover herself up, apologizing profusely, but you're not hearing it. You tell your girlfriend you're driving her home, and you tell your step-mother she can't ever explain this away. When you get back, she's still in your room, and she tells you that she wants to confess something. Something that will explain everything. "I'm a futa," she says, and looks at you expectantly. A what? You have no idea what the fuck she's talking about, and she can tell you're lost. "A futanari," she continues. "When I get very, very aroused, my clitoris turns into a cock. A fully functional penis," she explains, and her hand wanders down to her crotch, fishing beneath her robe. You see the lump of her fist stroking something, and although this is absolutely insane, and can't possibly be true, you let her tell you everything. What a futa is, what it means...and how she seduced your girlfriend. Before long, you're stroking your dick, watching your step-mother jerk her enormous girl cock, and ...god, you can't believe this...