Participate (Handjob)

The three of you walk to a nearby bench, with Green sitting down, her dress hiked up to show her complete lack of panty and freshly shaved pussy. Kneeling before her sister, Blue can only look with stupor at her usually shy sister.

"Come on Blue, get to it."

She grabbed her sister's head, shoving her between her legs. You watch as the usually fiery Blue whimper and start licking her sister's pussy. The sight of it is enough for a bulge to start forming inside your pants, pressing against the fabric. Well, there is no reason you can't have fun too.

With a few moves, you unbuckle your pants and sit down beside Green, whipping out your cock.

"Hey, what are you doing?"

"Using my new ****." You say to Green before grabbing Blue's hand and making her give you a handjob.

She shrugged. "Fine."

Before pushing her sister even deeper against her pussy, moving her head up and down her slit.

"Come on you slutty bitch, work that mouth! You're so good at being a useless fuck mouth usually."

Seeing Green curse and use her sister like a cheap slut, while said slut was giving you a handjob was like a dream. Even if the handjob was a little rough. Your and Green's breath soon got ragged under Blue's tongue and hands, a feeling of pressure slowly building up inside your rod. Beside you, Green's panting and light moaning as she abused her sister had turned into an erotic show. You could feel your cock twitch and grow harder as she rocked back and forward, wishing you could spin her around and fuck her dripping pussy. Just as you were thinking that, she turned her head toward you and looked at your throbbing cock.

"Hum." She licked her lips. "Bigger than I thought." She said with a wink.

That was too much. You feel yourself come between Blue's fingers, spurting thick ropes of cum all over her hand with a groan while Green too came with a long moan, gushing over her sister's face. You were both left panting, riding the wave of ecstasy while Blue could only stare at her hand and sister's juice drenching her shirt.