Nope, you're too clumsy

You accidentally nudge Gwen's thigh as you approach her her and she slowly opens her eyes to see your face, cuffs in hand. "Sara...?" She says.

Dammit, It's now or never! You quickly straddle her waist and try to pin her arms down before she's fully awake, but she grabs your wrists and stops you. She manages to roll both of you over and all of a sudden she's now on top of you pinning your arms down on either side of your head. As a petite 18 year old, you were weak even for a girl, and Gwen had no trouble holding you down. Apparently that witch gave you a submissive side and you felt your crotch throbbing in approval as you fought uselessly against your sister's grip.

"Good evening sis," she curtly states "Care to tell me what you were gonna do with those?" She glanced at the handcuffs still in your grip. She sounded more curious than angry.

You decide to be as truthful as possible, "I'm sorry, I couldn't sleep and wanted to do it with you but I was scared you would cum inside, so -"

"-So you decided to tie me up? So you could use me however you wanted?" She asked. You felt her cock grow hard as it was pressed against your damp panties.

You meekly nod in response.

She smirks. "Well I have a better idea" she says.

"What're you - ahh-!" She rolls you onto your front and forces your arms behind your back. You try to struggle but there's little you can do against Gwen in this position, and soon you feel the cold handcuffs click and tighten around your wrists.

"Now.." she says, turning you back up to face her. "How should I punish you?"

This was the worst-case scenario. Your plan had backfired completely and you were now at the mercy of Gwen, **** to endure whatever she wanted. You just had to hope that it didn't involve another belly full of cum. She starts off slowly, skating her fingers over your waist and thighs, enjoying how your ticklish body squirms.

"Mmmm..." She purrs as her finger teases your navel, eventually skating down your crotch and pulling your panties down.

"Gwen.... remember... you can't-mmmpfff!"

You're interrupted as she stuffs your moist panties into your mouth, holding them in place with one hand as her other rolled your nipple between her thumb and forefinger. "I can do whatever I want to you, and you'd love it". Despite wanting to deny it, you knew she was right. Even as you protested into your gag all you could think about was about how good that cock pressing against you stomach would feel pressing against your womb. She slides a hand back down your abdomen and into your crotch, directly touching your clit. You moan loudly into your panties as your hips buck upwards into her hand. Just as you're about to cum, she pulls her fingers away. She laughs quietly as you let out a muffled squeal of frustration.

"No cumming until after your punisment.." She pins you down, holding your panties in place as in place as you whined and struggled against her in a futile effort to get some release. You soon tire out, panting with tears of frustration in your eyes as she looks at you with a satisfied expression. "Now how do you want to be punished?" She releases her hand and lets your drool-soaked panties fall out of your mouth.