| I am a 25 yo. male and my Mom is 43. My fantasisize that I have spent months training the family black Lab. to mount when some one removes their panties or shorts and presents their naked butt to his view. I trained the dog very well and he became very predictable, waiting patiently as I stripped naked, and when I would assume the doggy position(all fours) he licks my ( boy pussy), and then mounts me and I become his bitch. One dark, rainy Saturday after noon I am home alone with Mom , and she is dressed in her tight shorts and a skimpy blouse! Mom is very sexy for a 43 yo. woman! I had a thought ! Gosh I would love to watch the big black dog on my Mom! A bout one hour latter Mom anounced that she was taking her bath. Now is my chance I thought! Mom went into the bathroom and I ran to the bathroom door and peered through the key hole.!We lived in a old farm house, remember the key holes? The big dog was beside me, and when I saw Mom looking away from the door I eased it open and pushed Bob(the dogs name), inside, and eased the door closed. Mom saw the dog and as she looked around the room and towards the door she said with a puzzled look," how did you get in here", " well I suppose that it is alright"? As Mom began to undress, my breething became more and more difficult! I was trembling, and as I sliped my trousers and underpants off, my young penis sprang straight out! Finaly I watched as Mom slid her white silk panties down her long legs and stepped out of them. The bog black dog was sitting in front of Mom and his red cock was out of its sheath! I saw the startled expression on Mom's face as she looked at the dog's red cock! But then she seemed to say , "oh that is just the dog in him". I watched as Mom turned , got down on her knees, and leaned over the bathtub rim to turn the water on! The big dog was standing, and I couldnt breeth as I saw his nose find Mom's butt crack! " NO WHAT ARE YOU DOING", Mom yelled out as the dogs long tounge found her pussy lips! The dog continued to lick Mom's pussy as she crawled around on the floor trying to get away from the licking dog! But she couldn't, the dog seemed to know that he must get Mom wet! OH I gasp as the big black dog mounted Mom, circleing her waist, just in front of her hips with his front legs! I watched as Mom tried despertly to free her self, but the big dog held her, and soon began to hunch, and thrust! As I watched and heard Mom scream" NO, NO ,PLEASE NOOOOO,,AAUUGGHH, OHH OHH NNNOOO!! Mom's head went down, and and as the dog's mouth began to drool, and he started to thrus hard and steady, I knew that his hard, dark red cock had found Mom's pussy! I was watching this dog breed my Mom! My Mom was a bitch! Mom soon surrendered, and spread her legs open to accept this long wet dog cock that was deep inside her, breeding her, impregnating her! I continued to watch as my Mom stamered and yelled out, "OH, OH NOW I CUM, I CUM NOOO!!" I saw the dogs white sticky cum ozzing from Mom's well fu'ked cunt, as she collapsed on the floor and the big dog turned away from her , as Mom and the dog remained tied! Latter at dinner Mom seemed to be in a hurry , was I to see her and the dog again?