Thank god she was driving, my car was out of gas. We put our seat belts on, before she started the car and backed out of our drive way. A little way d...wn the road, I glanced over at her chest. Her tits weren’t as big as her sisters, and once again, if I had to guess - they would be B cups. I began to think of them. I love tits, big or small - I don’t care. As I was thinking about sucking them, I gained a hard on - that was noticeable.We stopped at a red light, and I started to shift around,. This was so much bigger that it couldn't just slide in, she shifted her hips slightly and pressed it in harder, she felt her walls give way as they accepted it inside her. Slowly she moved it in and out, fucking herself with it. A moan escaped her lips as they curled into a smile, this was much better. She picked up the pace, she needed to cum – now. The orgasm built like a tidal wave, ready to hit at any moment, hammering it in and out of her tight cunt, she moved her other hand down to take. She settles down and asks me not to hurt her. I tell her to remove her nightie and she hesitates. I again show her the knife and she removes the lace teddy. As I said she is a goddess, then I tell her to tie the bindings around her ankles.When she finishes, I take her hands and do the same to her wrists. Now I can take my time. I tell her to talk to me, tell me what she is feeling. As expected she tells me she is afraid, not knowing that this is what I want her to feel. Something took me over. Either way, I was looking forward to a house full of women dressed to arouse.I leaned over to kiss my mother on the cheek, but she turned her head at the wrong moment, which resulted in us kissing lip to lip. I was surprised that it lasted a second longer then her lips slightly opened. Without lips still together, I saw her eyes widen as well, hinting at her inner desire. There was a brief moment of tension between us, but it dissipated when I quickly laughed it off and moved over to embrace.