Tighter

 
Bianca is tied spread-eagle on the bed.  I've teased her almost insane with her new favorite vibrator, and now  she's really enjoying me whipping her pussy, her thighs, and her breasts, craving the whip more than usual, while the vibrator's still inside her.  Then I remove the vibe, spread her pussy wide open and first tease her clit with the dangling whip tendrils before starting an increasingly-hard rhythm of whip strokes, watching her hips rise to meet each stroke, before she finally says, "Ohhhhh, enough...!", and her hips slump back down on the bed.  Now I warm some lube in my hand and get her slippery and ready for me, and she's so hot when I enter her, and we soon devise a new rhythm of deep strokes and thrusting hips.  And then, when she's almost ready to come - my arms being conveniently long enough - I reach up and pull one of her wrist ropes out tighter, stretching her arm, as I pump harder, pull tighter, and stretch her arm even further, and pump us both to a moaning, groaning, shouting, thundering climax!  Bianca's usually conservative about how tight I tie her initially, but in the heat of this moment, it seems there's no end to how tightly I can pull her ropes, and she comes harder, and I come harder, the tighter I pull.  Wow, now that's a win-win situation . . . !  Do try this at home.