Your stepsister walks in the room

Your attention is pulled away from the dildo in your mouth just a little bit when you hear the door open, and even more when you look up to see Sarah walking through the door. Suddenly self-conscious, you manage to sit yourself up on the ground, but can't seem to keep your hands from pumping the red plastic between your lips.

She takes one look at you and doubles over in laughter. "Look at you! This is amazing, this worked out better than I could ever have hoped for." You blush, but you can't stop the obscene noises coming from your mouth.

As your sister's laughter dies down, you notice that her eyes start to be drawn to your lips. She's looking at them intently, thinking about something.

"I've always wondered what men liked about that so much..."

She moves her left hand over her right wrist, where you see her place two fingers over the face of her watch. It catches your attention in the same way it did before you were commanded not to care about it. Sarah holds her fingers on it for a moment, before an expression passes her face that's impossible to read, and she takes her fingers off.

She grimaces, and pulls her tight pants and underwear off hurriedly. She stands up and you see that she's given herself a dick of her own. When you see it, you can almost feel the synapses in your brain shorting out. Your vision tunnels, and the only thing that matters in the whole world is the heavenly beauty hanging between your stepsister's thighs. You're only very vaguely aware when your arms fall to your sides and the dildo slides out of your mouth with a pop, leaving long trails of your spit hanging down from your mouth.

Your sister waves you towards her with her hand, and at her prompting you crawl slowly over. Her dick begins to slowly rise of its own volition as you subconsciously remove your top, leaving only a bra to contain the swinging of your heavy tits. You reach your sister's feet and take only a split second to reverently admire the pale, curving phallus before slamming your face down on it with unrivaled enthusiasm.

Your stepsister screams, halfway between a yelp and a moan, surprised by the feelings you're forcing through her. She falls back on the couch as you continue to **** her newfound manhood. Your hands creep up her legs and start to massage the fleshy sack she gave herself under her cock. Above you, your sister starts to moan and scream. Her hips buck at irregular intervals, and you can feel the dick in your mouth start to spasm. She's not going to last much longer.