Jack and Bill 5
"Now where has that young man gone off to?" Jack's mother thought to herself, finishing the wash and looking for her son, who was home from college, to help hang it out to dry. She headed out to the barn - he'd been spending a lot of time there and she thought she might find him brushing one of the horses. She walked along the stalls until she heard some scuffling and panting coming form the last one. As she grew closer, she could make out the back and tail of one of the farm dogs: large, goofy, strong Labrador Retrievers. Right away she recognized the humping motion of a dog fucking his bitch. They weren't supposed to be doing that - they had enough dogs around the place, no need for another litter of pups - and she knew she should yell for them to stop, but she secretly enjoyed watching them fuck. They were such, well, animals about it, the male mounting and holding his mate while he jack-rabbited his stiff pick cock into her. What a shock when she rounded the corner to see, not a bitch dog, bur her son Jack on his hands and knees, pants around his ankles with a horny male dog fucking his ass! Her mouth fell open, but she didn't say a word as she watched Jack getting properly bred, and hard, by the dog holding him in place with its front paws. Mrs. Johnson surprised herself then by leaning over to get a better view of the dog's dick sliding in and out of the young man's asshole, which seemed to be opening up for the obscene animal cock, the rim of his sphincter gripping the pistoning penis like the lips of a tight pussy. Rufus, the big Lab fucking her horny, sweating son, started jabbing into him faster and deeper. Rufus whined, then yelped, his humping hips going wild. "He must be shooting his semen into my boy now," she thought, feeling her own pussy getting wet at the thought. Jack must have liked it too, she noted, as his cock throbbed and, without even being touched, began spurting ropes of cum onto the barn floor.