Chapter 54 My Virgin Sister 11

"Oh God, Jack! I'm cumming!" She is feverishly rubbing her clit and I am twisting her back and forth as fast as I can. Her pussy seems to be trying to clamp down on my cock, but can't get a grip because of the corkscrew effect of the apparatus. "Spin me, Jack! Spin me! Spin Meeeeeee! Fuck! I'm cumming!" I'm frantically twisting her back and forth, literally screwing her up and down on my cock. The harness keeps her from bucking, like she usually does, but I can feel her pussy muscles pulsating against my cock, as I twist her up and down.