I’m on my knees loading the washing machine. I have the house to myself with everyone else is out and am trying to be the domestic goddess everyone imagines me to be.

I pull out the dirty clothes from the laundry basket we keep in the main bathroom and sort them into piles of whites and coloured. The amount of dirty clothes my sixteen year old step-daughter creates is enough for a load on its own. She seems to wear a different outfit every day as well as her school uniform. She’s growing up. Growing into a beautiful young woman. Her breasts have finally started to fill out, much to her relief and are now a 34B, according to the label of the pink bra I’m currently holding.

I reach in and pull out a pair of her panties. They’re maroon boy shorts and even without looking too closely, I can see the white cum stains in the crotch. I can’t explain what happens next. I bring the stained fabric to my nose and inhale. It is the most beautiful thing I have ever smelt.

As if on autopilot, I slide my other hand into my jogging bottoms. My own knickers are getting wet as I needily rub myself through them. My head spins as I inhale the aroma of horny teenager.

“What the fuck do you think you’re doing, mum?”

I look up and yelp in fright. I drop her panties but it’s too late. My step-daughter has come home from school and caught me with my hand down my joggers rubbing one out while sniffing her used knickers.

I blush. My face is burning beetroot red. “I… I… I..” I stammer, no words form. Nothing coherent anyway. I’m like a deer caught in a car’s headlights.

She closes the door slowly and steps towards me. She reaches down and plucks the panties up from the floor. She raises them to her own nose and inhales deeply.

“I wore them in bed last night,” she informs me matter of factly. “There’s something so naughty about cumming in your panties, isn’t there, mum?”

I swallow, still not trusting my mouth to say anything. She drops them back into my hand. I squeeze the material, grateful to have them back despite the awkwardness of the situation.

“So, how long has this been going on, mum?”

I shake my head to signify there isn’t anything going on.

“I’ve seen you looking before. All those times you’ve suggested going swimming and always to the pool with the communal changing area. I know you’ve seen me naked, seen my shaved pussy and my pink nipples.”

She steps even closer now. She is standing right in front of me as I kneel on the utility room floor. I’m staring at her school skirt. The white school socks stop below her knees and the expanse of pale thigh flesh grows as she raises her skirt.

“Those ones smell stale,” she whispers. I look up at her. She has a malevolent grin on her face. “Of course, if you want to sniff a fresh pair, it’ll cost you.”

I glance back down. The skirt is bunched up around her waist and the pair of striped yellow and white cotton panties are clearly exposed. They are tight around her mound and there is a hint of a camel toe.

“Cost me?”

“I need new clothes.. and trainers… and a new phone too. This iPhone is ancient.”

She pulls the offending phone from her blazer pocket to show me, then smiles and I hear a click. I realise I am still kneeling with one hand in my joggers and holding her panties with the other.

“A reminder,” she snaps when I open my mouth to protest.

I gaze back at her panties. My face moves in closer, inhaling her scent through the thin fabric.

She reaches down and puts her hand on the back of my head, pressing my face into her crotch. My lips kiss the fabric as her aroma makes my head spin. Without thinking, my tongue slithers out and licks them.

“Oh mummy,” she sighs, grinding down on my face. I kneel there and kiss and lick her panties as my sixteen year step-daughter humps my face.

“Rub yourself,” she orders. “Make yourself cum as you sniff and lick my panties.”

I obey instantly. My hand slides inside my own knickers and I greedily rub three fingers over my dripping pussy as I taste my step-daughter’s flavour through her panties.

“It’s all so very wrong but I can’t help myself. I’ve wanted this for so long.

My tongue slurps and licks, the fabric so wet it is almost transparent. I can see her clit swell every time I swirl my tongue over it. She slowly rocks her hips as she tugs on my hair, holding me in place.

“I’m close, mummy,” she whimpers.

I close my eyes, my fingers are rubbing my clit so hard it hurts. I whimper and moan into her teenage pussy as my orgasm threatens to overwhelm me. Her cries are short, panting and high pitched, like birdsong as she presses my face to her pussy and begins to shake violently.

Her panties dampen with the most indescribable flavour I’ever experienced. It’s intoxicating and my head spins with the combination of her flavour and my spasming pussy. Eventually after what seems like forever, she slumps back against the dryer.

“Fuck, mummy,” she pants. Her eyes are hooded. She looks feral. Her mouth is open, lips parted and she takes in quick and shallow breaths.

“You are so bad.” She grins that same malevolent grin. “You are so going to have to make it up to me when we go shopping tomorrow.”

She slides her hands under her skirt and tugs the ruined pair of panties down her legs. Stepping out of them, she hands them to me. I hold the sodden bundle in my hand and watch as she slips out of the room. I bring them to my nose and breathe. I’m addicted. I know it and she knows it.