Pretend to be her boyfriend.

I run my hand over her full tits as she struggles to breathe only through her nose during such an intense moment. I grip and grope and squeeze them shamelessly as she rides out her powerful orgasm and strains helplessly against the tight restraints.

Finally she comes down a bit; she's still breathing rapidly but she's squirming less so I assume the orgasm is over. The vibrator continues buzzing away at her sensitive clit, however, and I make no move to save her from it. Instead I lean over her and whisper into her ear, softly enough that she'd never be able to tell whose voice it is. "Did you do everything I instructed?"

She nods, now gagged and still blindfolded.

"You left your phone at home." She nods.

"No one knows you're here." She nods again.

"You're totally and completely alone here and you willingly tied yourself up to be at my mercy." She nods a third time, seemingly pleased with herself.

"You are such a little slut."

She moans into her gag and writhes for me a little bit as if trying to entice me to touch her.

I continue in my anonymous whisper. "Oh, you like being a slut. Of course you do. You're such a thirsty, **** little slut, aren't you?" She nods weakly and says something unintelligible into her gag, her legs quivering. "You want me to turn the vibrator off? Is it getting too much for you?" Again she nods. I smile.

"That's too bad, sugar tits. I like watching you squirm." She whines pitifully so I pinch both of her nipples hard. Her whining becomes more urgent.

"Are you sorry?" I whisper. She nods frantically. I don't let go. "And are you going to be a good little slut and stop whining like a pathetic bitch?" She nods again, cutting off her whine but I can tell it's hard for her. I release her tender nipples and she relaxes visibly. "Good. Now for your punishment."

I pull a fat vibrating butt plug out of my bag and place it into her empty hand. Her fingers curl around it curiously. "Feel that? You know what that is, don't you?" She nods slowly and I could only guess at the look on her face. "You know what I'm going to do with this, don't you?" She nods again, clearly less than thrilled, but she's completely helpless. I suppress a laugh as I take the fat butt plug back from her.

"Tell you what. I'll lube this up for you if you jiggle your tits for me. Otherwise I'm just going to shove it in and hope for the best. Do you want the lube?"

She begins to frantically wiggle and squirm on the bed, somehow managing to lose another inch of slack in her arms, but she succeeds in shaking her tits lewdly. I'm pleased. "Good girl." I say as I apply a generous amount of lube to the plug before working it into her tight asshole. She strains and fights but ultimately loses. The fattest part of the plug makes it inside and her tight hole snaps closed around the narrow neck. She's breathing desperately.

"Ah, time for another orgasm, is it?" She nods.

I turn a little dial on the end of the butt plug and it begins vibrating powerfully enough that her tits practically ripple from the tremors.

Instantly, another orgasm tears through her, accompanied by muted screams from behind the gag. I just sit back and enjoy the show. She doesn't know it yet but we're really only getting started. It's going to be a long weekend.