I was in bed feigning sleep when she came upstairs. She went straight to the shower, mumbling. I "woke up" and asked her what happened. She said she'd...been startled by a raccoon and slipped and fell in the mud. It was a convenient excuse not to come near me and to throw her clothes straight into the washer. Now I was sure she was washing off evidence, and she'd explain away any bruises by her "fall."The next day, Willy put in a special request chit for a duty swap on Saturday, four days away. She tossed and turned in bed that night her hubby on the road as normal her mind going crazy over what she had done she gave up and went to sleep. Two in the morning Kim comes to her mother room standing at the end of her bed she undresses and comes to Tori's side gentle to not wake her she pulls back the covers looking down she thinks this is what she wants reaching down she grabs a hand full of hair and pulls Tori's face to her cunt yelling suck my cunt bitch grinding her cunt in her mothers. Watching her. A raging boner between me legs. She just smiled at me: “Be a good boy. Make mum proud. Shoot a load for me.”So I jerked of. Eyes constantly on my big fat mother. Pulled my hand up and down. Even moaned a little bit. Until I was near an orgasm. I felt him building up. And then, finally cum shot out. My bod trembling in joy. All over the naked me. And on the floor. Mum smiled at me: “Such a good boy. Always jerking of to his mother.”Still covered in my own cum, – no not the whole. I was breathing heavily, my body was shaking, as our family's rottweiler went motionless and whimpering. He just laid on top of my back, I could feel the dog ejaculating, his very warm semen into me. It was very much warmer than a man's semen, I could feel the dog's large balls throbbing against the inside of my thigh. Our family rottweiler had just completed our mating, by depositing his seed into me. I could feel our family's rottweiler's seed flowing down inside my pussy towards my cervix.