I know it sounds strange but heres how it happened.... My grandma is 75 and she has several health conditions, including Alzheimer's. So I woke up one day only to look out my window and see several inches of snow, so I looked online to see if i had a snow day.... turns out I did. My mom normally goes to my grandma's to check on her and make sure she is alive every tuesday. Today was tuesday.... but the only problem was that my mom was already running late to school because she and my dad were fucking.... I know this because While I was brushing my teeth, I heard my mommy moaning from across the hall. Anyway she didn't have enough time to check on my grandma so she asked if i could since i didn't have school. I said sure because if she died the funeral would probably be on a week day and I can't risk missing a basketball game. So I went. When I walked in I yelled, "Grandma, where are you?" I hear a slight groan from a distance and follow it to her bedroom. I said, "grandma?" She made another slight groan. I walk into the bathroom to find her naked lying on the floor. I was alarmed at first... but then i was a little impressed by me grandmother's juicy curves and tender looking boobies. I asked why she was naked on the ground and she said she slipped while trying to shower. So like any good grandson I told her I would help her get up. Before doing this I striped naked because I didn't want to get my clothes all wet. When I took off my pants she couldn't stop staring at my penis, which was hard as a rock because of her sexy body. She looked at it with wide eyes and an even wider pussy. I asker her what she was doing.... she said that she had never seen a dick so huge. I just ignored the comment... i mean she is a sick old lady. so i walked toward her grabbing her underneath the arms, only to squeeze her boobs. After that, i feel over because i lost focus. when i fell, she said now come over here you sturdy young fuck muffin. I lost any morality i may have had and said alright grandma lets just fuck okay? She replied with a aggressive moan then she took me down and straddled me with her thick cut thighs. I liked it so much I came right then and there. she saw it and bent forward to suck it all out. She said "let me suck you dry ya little dirt bag".... i never knew my grandma was so fun.. in my head I'm thinking.. "is this was mom and her do too? Maybe Ill have to try mom out too." so she sucked my so good... but it like deflated my penis. I looked at her and said "grandma what the fuck? You little inconsiderate cunt." she told me to calm down and wait. then she pressed her pussy lips onto my dick and suctioned it on so hard it hurt. she started to make a face that indicated pain.... i got worried she was going to die.. her face got redder and redder and then lost all color.... but then she queefed and inflated my penis. It was at least 2 inches bigger than before and much wider!!! I was so thankful. she told me that she did it because her vagina was wide as shit and i needed a slight boost to satisfy her. then we went straight to fucking. It was literally thee best fuck of my life. She let me cum inside her.. i mean why not? The whore's already been through menopause, she can't get pregnant. After the fucking, she told me it was her plan all along..... she hoped that i would check in on her one day so we could fuck... she said that when she took me to get circumcised i had the biggest cock and she couldn't wait to give it a ride. So that was my snow day.