Bill, my stepdad and his family are pretty cool folks. Bill's dad, Al is in his late 60s. He served in the navy but the fitness routine never retired. He works out daily and is more muscular than my stepdad.

Thing is, Al and I have been fucking for the past 2 months.

Spent 2 weeks with Bill's family while Mum and Bill went on a vacation. Al was always fond of me. Took me out to the lake for fishing most evenings and taught me how to cook. It happened that particular day when Al had grabbed the cooler with beer in it. Since we were already parked in the waters, we decided to drink on the boat anyways.

I was sitting opposite Al, we were talking and laughing.. I leaned back and my legs were apart. I caught Al stealing glances at my crotch so I opened my legs farther apart. He tried to look away. I got very bold.. I actually massaged my pussy. By the time Al was paying full attention.

I unbuttoned my pants and slid my hand inside. I rubbed my clit, moaning in ecstasy. Al continued watching and leaned closer. I took off my pants and now my shaved pussy was completely exposed.

I stuck my fingers vigorously in and out of my wet pussy. Al finally said "Let me help". He grabbed me and made me lean on him. His hands fondled my boobs, fingered me till I came. Next, he unzipped his pants, turned me around and shoved his erected cock into my mouth. He let out a groan as I sucked his cock which was about 6inch long and 2inch wide. Al came pretty quick. I swallowed and we decided to head home.

Once we got home, we landed in my bed and Al was stiff again. We fucked for at least another hour, my orgasms were so intense. Al blew his load on my face and I licked them off.

I am horny all the time and we'd fuck but when Al can't keep up, he'd handle me with the vibrator. Or the dildo. When Mum and Bill returned from their trip, I was sad to leave Al.

So far, every weekend I have come to visit and Al was always pleased to have me. I love it whenever he moans to say how tight I am and how he should've met me earlier (although I have no idea which century he meant) but I really enjoy this sexual affair with my stepgrandfather. It sounds sick but so good too.