Motorbike passenger got horny....

When I was 14, my parents, and my sister, who was 16 at the time, all went to a family reunion on my mother's side. It was at my aunt and uncles cabin on a small private like.
It was a hot and sunny day. All my cousins and I were having a great time playing in the water. The had a jet ski. My sister asked our uncle if we could ride it. He said sure. Then showed my sister how to drive it. My sister looked at me and said come on let's go. She jumped on, and I climbed on behind her. My sister and I are close, we're actually best friends. I've never really thought of .y sister in a sexual way. She was wearing a normal bikini. She had a normal 16 yr old girls body, a little chunky, I guess they call it curvy.
Anyways we took off, going pretty slow at first. As we went faster she kept sliding back against me. To the point her butt crack was rubbing against my cock. I got and instant erection. I know she has to feel it against her butt and back.
That's when it happened. Im a normal 14 yr old boy. I've masterbated a few (several) times. I suddenly had the feeling I was about to cum, and then I did, a lot.
My sister slows down an stops. Turns around smiles and asks if I want to jump in the water and clean up. I looked at her, asks how'd you know? She looked at me and said. "I could feel your erection rubbing against my butt. Then I felt the warm went spot forming against my backside". I was a little embarrassed. Then she grabbed me and pulled my off the jet ski into the water. Which when went to get back on the jet ski, we kinda realized getting off into the water, was a lot easier then trying to get back on. I had to put mu hand on my sisters butt and push her up. Then she had to pull me up.
That day changed the way my sister and I looked at and felt about each other, we definitely became even closer.

When I was 14 yrs old, my 16 year old female cousin took me for a ride on her motor scooter. We had a small above ground pool. My cousin came over to swim and play in the pool. After a bit she asked if I wanted to ride up to the gas station and get a couple of sodas. I agreed we slipped our flip flops on, I climbed on the back grabbed onto her waist and off we went. It was about 6 blocks to the gas station. I not sure if it was because my cock was rubbing against her butt crack. Or the fact that her bikini bottoms had slid down just a bit, and could see down her butt crack. Either way I ended up with a major erection. That I found impossible to hide in my tight skimpy speedo swim trunks I was wearing. When we stopped at the gas station, my cousin seen it, and started laughing and told me to stay with the scooter.
Well I still had my erection when she got back on the scooter and we headed back home. I repositioned my cock so that the heas, and half of it was sticking above the waistband of my swimsuit. Pressed it against her backside and held on tight. About two blocks from home I ejaculated all over her backside. My cousin took it as a big compliment. I still continue to compliment her till this day, and just not a scooter either.

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Im a female biker too and ive had a good few male passengers "have a reaction" to sitting behind me on the motorbike! I always took it as a compliment!
When i was in college i used to give a neighbour a ride regularly. He always got hard behind me and even got a bit too excited a few times and had to run to the bathroom to clean up when we got off the bike!

You should be very proud you made him hard

Ok. I'm a 52 year old female. Maybe I'm missing something here?
Please explain why you would think that's a bit disgusting?
When I was in my prime years, sure riding a motorcycle is fun but riding a guy is a lot more fun!

It's a compliment.
The summer before Covid, my husband and I rented a beach house with our long time friends D & G. G went shopping and had tickets to a concert none of us cared for. I stayed to work on my tan. D and my husband went golfing and bourbon tasting. They came home and started drinking a bottle. My husband is a light weight. D helped me get him to bed and he was out snoring. I was still in my swimsuit and we were sitting out back. I was drinking wine and buzzed but still in my right mind.
D and I were flirting like we usually do when no one is around. I hopped up on the railing and he was standing between my legs. I noticed he was pitching tent. We joked and he said, 'I'll show you mine if you show me yours'. He pulled his shorts down and his penis popped out. I pulled my swim bottoms to the side. With no words spoken, we both watched as he went inside. Once he was all the way inside, he started a slow 'in and out' motion. The first words spoken was him saying, 'I'm about to blow should I stop.' I said, 'well, we've already went this far go a head.' btw; I had my tubes tied 8 years earlier.
Once he finished I made a mad dash to the shower. He did too. We came back and chatted till G came home around 1am. That was a one time thing and thankfully things are not awkward between us to this day.

OMG!
"Should I see it as a compliment or disgusted?" Really!
F/44
You took the guy on a bike ride and he got hard! Yes that's a compliment!
He's into you!
Back in my day, we knew how to get a guy we liked hard and we knew how to take care of it!
For example, when I was a college intern, the guy I reported too was attractive and liked to flirt. We went to lunch one day and he drove. btw; He was much older & married.
We were flirting on the way back, I noticed he was adjusting himself. I made my move and gave him road head while he took 'the long way' back to the office.
I got the same internship the next 3 summers.

Should've finished him. I used to ride going to school in the 80s. My neighbor and best friend sometimes would ride behind me. He got hard on thr way once, said he was sorry, I said, don't be. We ended up skipping school and sucked each other off all damn day! We started doing it whenever we were able to be alone, which was almost every day after school. God his cum was delicious.

Went on a jet ski with a girl next door. Didn't know where to put my hands and she just put them around her tits. Tried not to squeeze them but she went fast. Got hard fast and she just said hold on tight. Stopping in the middle of the lake she said to swim and jumped off. Trying to hide my erection she giggled and said she's seen them all so mine was no different. Jumping in she asked if I liked her tits. Saying yes she said she'd show me them if she got to see my cock. Pulling down trunks down she gasped and got her tits out. Getting back up on the jet ski she said I could keep playing with her boobs but only if she could feel my cock between her legs. By the end of the ride I had came hard. Before getting off she wiped her crotch and gave me a taste before washing herself off.

A hard cock is always a good thing. Suck on it

Girl I took for a ride gave me a reach around for a good five minutes before I found a good shirt to pull off bend her over the seat lick her pussy for a minute before i stuck my cock in and unloaded a huge load inside her. She pulled her panties up and off we went. I imagine she has an absolute mess in her pants riding after as the cum continues to ooze out with the vibrations of my crotch rocket.

I ride my bf's bike and sit behind in way that my pussy rubs against the seat and I feel the vibration out of the engine exciting my clit to orgasm. As I am about to climax, I stroke and pinch his sensitive nips from behind and rub my boobs against his back and he understands that I am nearing orgasm!

Take it as a compliment!