I felt stupid..."Thank you! I really appreciate that!" my mother replied back, I really wasn't expecting such a response. She was blushing and took a ...undred times better than I had ever thought she would. I took that as a sign that I was not going too far, that perhaps this was not such a one-sided fantasy after all. What a wonderful moment that was, I think that was what let things to eventually escalate. I spontaneously decided to stand up and hug her, forgetting about my raging boner.. To bind the sub so that she is immobile. A more sophisticated form is to train her to be immobile because you wish her to be, this takes discipline. A great deal of it on the part of the Dom and the sub. Mental bondage is far more creative and difficult, but for that reason it is more rewarding. A sub is the person that gives herself to a Master, it takes a great deal of trust to be able to do this as you are pretty much giving the Dom carte blanche to do with as he will.I really did not expect. After that precaution, she stripped naked and locked her door on the inside just to be extra careful and not be caught having sex with an animal.The air conditioner happened to come on at the same time and the cold draft made her skin into little goosebumps and she wasn’t sure if it was the cool air or a sense of fear about the unknown.Now, she was naked and with a large dog standing over her like some vision from an artistic magazine. The thought that ran through her mind was that she was so. Breaking our kissing, "Oh son, you're so deep inside of me. I believe you're just a little bit bigger than your dad is, in length and thickness. And yet, your not fully grown yet." Mom you are so hot and wet inside, and tight too." It is cause you're so big son. Now fuck me, you're driving me crazy."I started sliding my cock out slowly till just the head of my dick was inside of her pussy lips, then I started slowly sliding back into mom's pussy. I slid in then back outward slowly a few.