I (19M) Walked in on my (18f) sister masturbating in the bathroom

As the title says, i walked in on my sister masturbating in the bathroom. But you are probably wondering how it all lead up to this point. So i’ll tell you.

Me and my family consisting of me, my sister, my father and my mother was going on a trip. We were discussing how we would split the hotel rooms and suddenly my sister says “Maybe dad shares with mom and i share with jacky. This is what was decided and i was so happy because i would be alone with my sister. I have always had a sister kink and always when i watch porn i watch incest and step-family porn.

We were going to the Bahamas for 14 days and then we were heading back home. The first day was normal. All was going as normal until it was noon. My sister walked out of the bathroom in a t-shirt and red thongs. At that moment when i saw her my cock got rock hard. I hid it well because I was sitting under a blanket on the little sofa we had. We have always been pretty close but I was scared of her seeing my cock. She asked me if i wanted to see a movie which i of course said yes. she sat down next to me in only thongs and a white t-shirt, and guess what you could easily see through the shirt, yeah, her hard nipples. After a minute of her sitting on the couch, she grabbed onto the blanket, and at this point, i’m sure she saw my boner which i tried to hide as well as possible in my boxers.

We watch the full movie without anything happening and we both go to bed. We had two separate beds, so unfortunately we did not share a bed. But when we went to be i found out she sleeps in only thongs. I did not see her tits because she removed her shirt from under the blanket. She has C-cup breasts, and i know that for a fact because i have stolen her bra and panties and jerked off before. Anyway, I was lying awake and waiting for her to maybe show her ass but that was when the impossible happened. She somehow got her cover down while sleeping which revealed her beautiful tits. I got so hard, i ripped my cover off starting to jerk off while staring at her tits.

I layed there and jerked my rock-hard cock for maybe 40 minutes when i got the genius idea to go up from the bed, over to hers and touch one of her tits. They were so soft and it felt like heaven. When i touched her tit i instantly started to cum. A little of the cum got onto her cover but most of it I managed to redirect onto the floor. I panicked because i felt and saw her move but i don’t think she woke up. If she would have woken up she would have seen me standing over her, completely naked with my cock super hard and cum on the floor. I somehow managed to clean up everything without her waking up.

The next day went on as usual until lunch. After we had eaten lunch I went back to my hotel room and went to sleep because I was not feeling too good. My sister, mom and dad went to the beach. After a few hours I woke up, it was dark outside and there was no one in the bed next to me, so I thought that maybe they had not come back from the beach yet. I was tired and I had to piss really bad, but I had a morning boner, which I usually have. It didn’t stop me though and I went to the bathroom. When I opened the door I saw my sister, fully naked sitting with her legs wide open. She instantly closed her legs and in her hand was a bright pink dildo. I stood there like an idiot with my cock, obviously visible in my boxers looking at her. She then shouted, “get out!”. So I closed the door quickly and went to bed again but I was so horny from seeing her perfect body. So I decided to pull out my cock and jerk it. I did it fast and I finished before she got out of the bathroom. We did not talk for the rest of the night because I pretended to sleep.

The next day we did not look at each other while being out with the family. Later that day we got back to the hotel room and she said, “I’m sorry I thought you were sleeping”. I said it was fine and then my horny brain took over. I said in a shy voice that her body looked really good. This made her face go red and she just said “thanks”. I thought I had something going with her so I gathered up some confidence and asked her if I could see her tits. She surprisingly agreed and removed her shirt and then her bikini. When she took off her bikini her tits bounced a little which got me going. She said she had seen me jerk off last night and she thought it was pretty hot. I was in shock and didn’t know what to say. She then asked me out of nowhere if she could see my cock.

After I had pulled it out she complimented my dick. I said thanks and said to her, “Since you have seen my dick, wouldn’t it be fair if I saw your pussy?” She was a little nervous but she then removed her pants and panties and sat on the bed. I was so hard a started to slowly jerk off my penis. I asked her if I could touch her boobs, and she answered no. She said that i was only allowed to look. While I was jerking off she opened her legs and to my surprise, she started touching herself. I and her were sitting on our own bed watching each other masturbate. The way she was rubbing her clit and a few times push her 2 fingers into her tight vagina was so hot. We sat a good 10-15 minutes watching each other masturbate and by every second I was close to cumming. I asked her if she wanted to finish me off, and she said no :(. I asked if could cum on her, she said no. So cummed on my stomach and oh, my god, I have never cummed this much before. I think seeing me cum triggered her to also cum, she was shivering up and shaking a little. I went into the shower to clean off myself and to my surprise, she join me. Nothing happened in the shower, but only seeing her so close naked to me got me hard again. I decided to not jerk off in the shower because I did not want to push things.

These are the first days on the vacation with my family and there is a lot more to tell. Depending on how this do i might follow up with a second post on what happened next.

SPOILER ALERT: we have sex

#19M #Walked #18f #sister #masturbating #bathroom

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