Hot Summer Job/Refuse to acknowledge Kylie
You stubbornly hold your ground, refusing to give in to the tempting offer. They have to let you go eventually.
But Kylie isn't letting your cock go yet, nevermind your cuffs. She's started pumping in an excruciatingly slow rhythm, almost torturously slow given how horny you are. You would much rather she shake it like a jackhammer and abuse your rod with unrestrained force. But her measured movements send shivers down your cock and into your legs.
At first you think that she's just trying to convince you to do it yourself, but after a minute of her meticulous strokes you realize the truth; she's fixated by your foreskin. Pulling your sheath all the way back to expose your glans then pumping forward to pop back over the ridge of your head and close around the tip, she is all but documenting how your dick works. She's experimenting with your boy parts.
Her active curiosity milks pre-cum from you little by little. Soon you dribble onto her fingers and in no time she's lubing up the length of your cock with your own juices.
Without warning Kylie drops into a crouch. Your mind only goes one place, but it manages to betray you. Your underwear is already around your knees by the time you realize that she's lowering them. When did you even let go of them? It's all becoming a blur now.
"There... now you're just like us!" announces Kylie.
You find it frustrating to be susceptible to their every whim. Even though you feel amazing right now, being cuffed and stripped is slightly humiliating. But it's so hard to voice that displeasure while a recently minted teen strokes your dick and her younger sister watches eagerly.
Kylie is clearly still new to this. Her hand moves slowly but sloppily and sometimes jerkily. She's probably seen some porn of some kind but you ponder whether yours is the first dick she's ever touched, let alone stroked. You don't have to wonder that about Rissa though. It's plastered all over her face. She's mesmerized by your cock, blushing as much as she's gawking. As you watch her watching you, her hand moves over her hip and onto her pelvis. Her tiny fingers paw at her smooth mound, more scratching and manipulating her lips than purposefully rubbing anything. But her confused arousal makes your dick throb, squeezing out another helping of pre-cum.
"Maybe Larissa could convince you?" asks Kylie, noticing where your attention has gone.