Frank "controls" her.

"Why don't we go downstairs? I could use more punch and you look like you could use a top up. Maybe if you get closer to the action I'll have a better chance."

"You can live in hope," she chuckled, taking his arm and letting him escort her. From the glitter in her eyes, Frank could see that the **** was having it's effect, despite her will to resist. He had little doubt that given proximity, some banter and the continued sight of live action fucking, she'd succumb soon, but he had something quicker in mind.

As they reached the first landing he pulled the remote for the vibe out of his pocket the thumbed the button twice, raising the pitch of vibration in Brenda's cunt. She gave a sharp liquid gasp and fell to her knees, then sprawled on the floor writhing and squealing as he thumbed the button a few more times.

"Aiiiiiiiiiiiiii! Holy....Fuckin'.....Shit! Unnnnnnnngghhhhhhh! Fuck! Fuck! Aiiiiiiiiiiiii!" she wailed as she thrashed about frantically, her body twitching and shuddering as she came, her face contorted with surprised bliss.

Frank smiled as he watched her come like a feral animal, her hands clawing at the floor and at herself as she succumbed to the orgasmic spasms ravishing her body. After she peaked he slowly dialed back the intensity to it's original level and helped her to her feet. She clung to his arm, gasping and glaring at him with excited, fearsome eyes.

"What...the...fuck...." she moaned, leaning on him. "You...fucking bastard...Holy Shit...I came so...fuckin' hard...."

"Mmmm...you looked so hot thrashing around," he chuckled. "Like a cat in heat."

"Fuck...I really need a drink now...let me sit down..." she murmured, gratefully sinking onto a patio bench as Frank smiled at her and went to refill their cups.