Grandpa bought me a ride on mechanical rocking horse 5 years ago, and on this night I found out why, it was a sex training toy. Naughty Grandpa.

I was in high school and I was spending the night at Grandpa’s.

Grandpa had a big double bed and we were both sleeping in it because he only had the one bedroom and bed, and I’d slept in that bed many hundreds of times since I was very little and it was fine, until one night something naughty happened.

I woke up in the middle of the night, I was laid on my back, I opened my sleepy eyes and I could feel my arm moving up and down and it ached a bit like it had been moving for a while, I turned my head to the side and Grandpa was wide awake staring back at me with a smile on his face, “Hello, Princess.” He whispered.

I then looked down the bed sheet and saw it moving up and down in time with my hand, so I lifted it up and looked beneath and was shocked to see that Grandpa was holding my hand with my fingers wrapped around the girth of his big 6” cock and he was motioning my hand up and down to jerk it.

I looked back at Grandpa in shock, he just smiled and went, “Shush, let’s have some fun.” And he said it in such a calm normal manner that I thought it was okay, I wasn’t scared, I was very confused, but I wasn’t scared or anything like that.

I allowed him to keep motioning my hand for a while then he let go and told me to keep doing it, so I did, “Hold it a bit tighter, princess – that’s it.” I squeezed his cock as hard as I could and jerked it, it felt naughty but I liked it, his cock was really hard too but I liked how it felt as my fingers rolled up and down his shaft.

“I’ve always loved how your fingers feel around my cock.” He said.

I wondered what he meant by that, he said it like I’d done it before, this obviously wasn’t the first time he’d used my hand while I was asleep to pleasure himself.

Then his hand swept across the bed underneath the covers, it went over my leg and then up my nighty and then he pushed his hand down the front of my panties, “Uh...” I gasped, looking at him in disbelief, he was touching my privates which felt very naughty, “...Grandpa!” I huffed.

“It’s okay, Princess, you play with mine and I’ll play with yours. You’ll enjoy it – trust me.” He said.

“Um – Okaaay.” I replied, unsure.

I laid there slowly jerking on his cock while his fingers molested my pussy, they were pushing it, squeezing it, rubbing it, moving up and down my slit, he was tickling my clitoris, and trying to push his finger tip inside me, I could feel the pressure from his finger pressing against my hymen, “Uh – Grandpa, that hurts a bit.” I complained.

“It’s all good.” He replied, “Trust me.” He said.

Maybe 5 or so minutes later and Grandpa closed his eyes and started groaning, which sounded funny and made me giggle, then he was thrusting his hips up in to my hand, “Ooah – O-o-o-a-a-h-h.” he gasped out, and I suddenly felt his cock swelling against my fingers, then a strange vibration in his shaft and then my hand quickly became covered in some warm sticky liquid, “Oooaah – Oooooooooooaaaggh!” he groaned as he ejaculated all over my hand.

But at the same time as he ejaculated, he pushed his finger hard in to my pussy, “Argh!” I screamed out when I felt my hymen splitting and then felt his hairy finger going inside of me, “Ouch – Oh – Uh!”

Grandpa had hurt me but he acted like it was no big deal, then he lifted up the sheet and took my sperm covered hand at the wrist and he guided my arm between my legs and he made me put my sperm covered fingers up inside my pussy and finger myself, “That’s good stuff, get it up inside there.”

I felt very uncomfortable about it but did as he asked, and to be honest it felt quite nice, give me a nice little buzz inside, “Mm.”

Then he peeled back the bed sheets and kicked them off the bottom of the bed, and then he removed my nighty and panties so I was naked just like him, he got me to sit up and then he put his hand on the back of my head and gently eased my head down towards his crotch, “Lick my cock for me.” He said.

He was persistent and he wasn’t letting go off my head so I did it, I licked his wet sticky cock and tasted his salty sperm, I liked it, in fact I liked it so much that I voluntarily put his cock in my mouth and sucked it, “Mm.” I hummed as I enjoyed his sperm.

“How’s that taste, good?” he asked.

I nodded with his cock in my mouth, “Mm.” I hummed again.

After a few minutes his cock became fully erect again and he lifted me up, I swung my legs out to the side and then he sat me down on his legs just below his cock with his balls pressed against my pussy, “Now, are you ready to have some real fun?” he asked.

“Yes, Grandpa.” I replied.

He lifted me up again and then slowly lowered me down over his erect cock, his tip pressed against my pussy and then slid inside as he lowered me down, “Mm – Ouch!” I huffed with discomfort feeling his thick cock stretching my insides open as it slowly slid inside me, when it was about an inch inside he gently bounced me on it and it gradually inched further inside me, “Uh – Uh.”

“Now. Ride the pony, Princess. Ride the pony.” He said.

I knew exactly what he meant because years earlier he had bought me a mechanical rocking horse, it’s like a normal rocking horse but this one you sit on it and then bounce up and down and it makes the legs move so it moves across the floor, and every time Grandpa is at my house and he sees me playing on it he says, “Ride the pony.”

So I started to bounce on his cock, “Mm – Oooh” I gasped, I had never felt a combination of pain and pleasure that intense before, it was hurting having my pussy stretched but it also felt really good, “Ooh Grandpa – Uh – Uh.”

“Ride, Princess, Ride.” He gasped.

He let go of my hips and let me ride on my own, I bounced up and down, first I was doing it slowly just to get used to the feeling, and then as it felt better and better I bounced faster, leaning a bit forward with my hands on his hairy chest I bounced my hips up and down and rode his magnificent cock, “Uh – Ungh – Ooh Grandpa – Mm – I like it - Ooh – Uh.”

I then had a shocking realisation, Grandpa had not bought me that rocking horse just as a nice toy, he’d bought it to secretly groom me, using it to train me on how to ride cock, the bouncing motion was exactly the same.

“That’s my juicy princess, ride it, ride it.” He gasped.

After nearly fifteen minutes of riding, he put his hands on my hips and held me in place as he finally ejaculated, I was relieved because I was getting tired, my pussy clenched around his cock and I felt his strings of sperm shooting in to me, “Uh – Uuuuh” I moaned with pleasure, it was a good feeling, and Grandpa moaned so loud I thought he was dying, “UG – UG - OOAAAGGGGHHH!” Release my girlie juice on his cock

My arms were so weak at this point that I just fell to the side off of him and rolled on to the bed on my front, I laid there arms and legs spread out, sweating and catching my breath.

Grandpa chuckled and spanked my bare naked ass quite hard, “Now that was fun wasn’t it, Princess.” He said.

“Ouch.” I giggled.

I fell asleep after that and nothing else happened that night, but every night after when I slept at Grandpa’s he’d always let me ride him, I loved it, I like riding my rocking horse and Grandpa’s cock.