The day I saw Grandma fucking my uncle

My grandma was a very curvy woman. She was very pretty. Long jet black hair, hazel brown eyes, big natural breast and huge ass. One particular afternoon, i was on my home from school I was around 7 at the time. My uncle usually picks me up & drops me off at grandmas house. (My school was practically right around the corner.) So i walked home with some friends. Soon as i made it home, i saw my uncle's car in the driveway. I just figured he probably fell asleep or he was there visiting grandma with my aunt, and just forgot about picking me up. As i got closer to the door, i noticed it was unlocked. I walked in. I looked around, calling my grandma's name, then my aunt, & uncle's name. No answer. hmm, i thought to myself. I wonder where they could be. I remember walking up to my room, and my room was next to my grandma's. I could hear loud clapping noises, moaning, grunting sounds coming from her room...i quickly ran over to the door to open it. I opened the door slowly. Let me tell you, as i opened that door, I saw something, that i can never get out of my head...

As i opened the door, i saw my grandma bend over the bed, with her face being pushed into the pillow..her big tis, were flopping, my uncle was right behind her, grabbing her hair with one hand and spanking her ass with the other one...i was shocked shitless, but i couldn't stop watching. This was my grandma & my aunt's husband fucking. i kept the door cracked and just peeped and my grandma started begging and pleading him to stop, she was getting tired. he told her to shut the fuck up and take every inch. He kept pounding her, pulling her hair, making her moan and scream. My dick got so hard. I just stood there, watching him man handle her. flipped her over on her back and started pounding her so hard and deep, she started squirming and telling him he was too deep. My uncle is a big man. the way he was on top and fucking her, grabbing her hips and just pulling her closer in, so she could fee every inch of his throbbing wood. It was so insane, to watch this...i remember him telling her, she'd never want to fuck her husband (my grandfather) again, after the fucking he was giving her. he kept on plowing my grandma, sucking on her long saggy tits, and calling her his slut. saying he was going to fuck her, anytime he wanted to now. He then started grunting, really loud and then sheoaned a mnd he told her he was going to finish and empty his load deep in her pussy...

i tiptoed back to my room and closed the door. They came out the room, i could hear my uncle saying, he forgot about picking me up today... I honestly didn't mind, bc i got to see him and my grandma in action. It was a lot, to watch this, but that's a memory that'll never go away. I never caught them or heard them fucking again. I wish i did, I know after they finished that first time, my grandma was walking with a limp, and she just told me it was probably arthritis..