Let Her Keep Going.

It's clear she can't resist your pussy. From a certain perspective you've got her right where you want her. She tries to move as she recovers from her orgasm but you keep her locked in place.

"Finish what you started, limp dick," you tell her.

She grits her teeth and growls, "I'll show you limp!"

She starts putting all her strength into her hips and...Damn, it feels nice! It's also hard to keep her in place with your legs. Especially as they start to get numb. One thing's for sure, she definitely isn't limp! You lose your grip and she starts fucking you in earnest.

"That's more like it," she hissed. "Fucking take it, whore!"

You start up a counterattack, working your hips and using your inner muscles to massage her cock and make her cum again. And you do. She grunts and smiles as she shoots a second load into you. However, all this also feels pretty fucking good to you and you cum a lot harder than before.

Sensing trouble you try to escape but your limbs aren't responding very well.

"No escape!" barks Heather.

She starts slamming into you with full **** and you cry out in ecstasy.

"Fucking take it, whore! Scream! Cum all over my cock! You fucking love it!"

You want to protest but all that comes out is more moans. Worse, with every sharp intake of breath you feel more of the gas enter your lungs. Soon it feels like her every thrust gives you a mini orgasm. When the final one hits it's like a tidal wave. Your back bows like your trying to fold yourself. You stay this way for several seconds before collapsing to the floor, darkness taking your vision.