. I just thought you might enjoy the real thing..." I explained, still thrusting in and out of her but now a lot slower."BUT... WE CAN'T DO THIS!" Amy...relax ok?" Don't 'Amy relax ok' me! What If we get caught?!" We won't! !No one's even home!" This is wrong...this is so wrong!" She said anxiously.'But it feels so good!' I said in my mind.I sped up a bit, now going as deep as I could inside my sister's asshole."Shit... Your cock... rubbing against my rectum like that!" Said Amie, reaching back. I am securely fastened down, there is no escape, not that I want to escape. I want to push my head down and sink my face at her waiting pussy.‘Now then, I think your head is way too free. This should help’. My mistress pulls out a thick leather collar with metal rings and puts it around my throat. Then she gets out a rubber cord and fastens the other end to a hook in the ceiling, and the other end to the collar, so that my head is pulled back five or ten centimeters. I try to stretch toward the. She walked up the drive to number 14, noticing her Mistresses small sports car on the drive, the one she had had to bend over the bonnet of the time she had been caned. She would have smiled but she was too nervous. As she went to knock the door, it opened and there stood her Master. Her eyes dropped and she curtsied before she had realized where she was. She had been trained to do it, but it was seemed strange on the driveway. She was embarrassed, but her Master smiled, and said for her to. I can have it stamped to give it a rock look that will go with the exterior of the house."Lisa said, "Oh, yes! That sounds great!"He said, "Next weekend, I should have the prices nailed down with finish choices for the interior. We can talk about the details then."I said, "Great. I will give you a call to set up something for Friday morning."He said, "Make it Saturday morning at ten. Plan on my office."I looked at Lisa who nodded. "That will be fine. See you then."James left and we walked.