All persons in this story are over the age of eighteen.
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My twin daughters, Sandy and Diane just graduated college and celebrated their twenty-first birthday as well.
My wife, Sara, and I booked a week long trip to the island of Hawaii as a graduation present for the girls. The four of us were all set to go when my wife got a call that one of her aunts was seriously hurt in an accident and she had to go to her.
I was going to cancel the trip but Sara insisted that I take the girls on the trip and if she could, she would meet us there in the next couple of days.
So, Sara went to her aunt and Sandy, Diane and myself went to Hawaii. The trip was long and tiring and by the time we got there all we wanted to do was get to the hotel and rest.
A shuttle van took us to the Hilton and we checked in and we were guided to our suite, which was on the beach. The suite had two bedrooms, each with a king sized bed, a kitchen and a large room which was like a family room. The bathroom had a jacuzzi tub, and a huge shower with water jets all over the place.
Although we were tired, the girls wanted to go to the beach so they put on their bathing suits, which didn't cover much and off they went. As for me, I just unpacked my suitcase and put my stuff away.
As I started to unpack the girls suitcases I saw that they had a couple of dildos in their belongings. When I saw them, I just left their suitcases alone for them to unpack.
The weather was picture perfect and I could see the girls in the water having a good time. As I watched them, I could not help but think about them using dildos and it got me aroused as I could envision them laying on the bed with their legs spread and fucking themselves with their toy. I almost came just thinking about it.
When the girls came back from the beach it was time to think about dinner. The girls said they wanted to eat at the hotel restaurant, so I made reservations for 7:00 p.m.
The girls said they were going to shower. I told them to go ahead and I'll shower after they were done.
I sat in the family room and I could see the bathroom from where I was. As I sat there, I saw the door was ajar and then the girls started undressing.
I never realized how gorgeous they were. Sandy's breasts were a little bigger than Diane's from what I saw. Diane's pussy was smooth as Sandy had a puff of hair over her slit.
As I watched, my cock started to grow and I found myself rubbing my cock through my pants.
I finally heard the shower running and the girls giggling. I got up and walked quietly to the door and looked in. There were my two daughters kissing and running their hands over each other. I pulled back for a second then went back to watching them.
I could now see them rubbing their pussies together and exchanging kisses. It was a beautiful sight, really. I left the door and went back to the sofa.
When the girls finished, they came out wearing towels only. As they walked to their bedroom, Sandy's towel slipped down and exposed her breasts. Sandy realized it and saw me looking and apologized. I told her it was ok and let it go at that. Diane was following her and her towel was a little short and I could see her ass as she walked by, including the bottom of her pussy, which was still wet from the shower.
My cock had a raging hard on now and I decided to go into my bedroom to jerk off. As I laid on the bed with my cock in my hand, the door opened suddenly and their were the girls who had wanted to ask me a question. When they saw me, they said they were sorry and left.
I immediately jumped up and got myself together and went to see the girls. I apologized to them and told them that they should have knocked first. They said they were sorry and it would not happen again.
We all hugged and got ready for dinner.
We went to the hotel restaurant which was all laid out with leis and grass skirts and pineapples and coconuts. It really looked terrific and set the mood for a wonderful dinner.
They even had a floor show that we didn't expect and it was very entertaining.
After dinner all three of us went for a walk on the moonlit beach and listened to the waves crashing onto the shore.
The girls said they would like to go to the lounge to watch the show and I told them they could go but to be careful. I told them to charge everything to the room. I kissed them and off they went.
I went back to the suite and called Sara to see how things were. She told me she would not be able to make the trip as her aunt took a turn for the worse. I told her we could cut the trip short but she said no and that the girls should enjoy themselves.
I waited up for the girls but fell asleep in my bed before they came in and didn't hear them. They were very quiet as they came in and went straight to their room.
I didn't know what time it was when I awoke but when I did, I heard noises from the girls bedrooms which sounded like someone was in pain. I jumped up and ran to their room, forgetting I didn't have shorts on. As I ran to the girl's room, the moaning got louder. I opened the door and saw Sandy and Diane on the bed with their legs spread wide, their eyes closed and dildos in each of their cunts.
"Oh, my god, what are you girls doing?" I yelled. They came out of their sex induced trance and gasped. "Daddy, your'e naked. What are you doing?" Diane said.
I told them I heard moans and thought they were sick or something was wrong. Then I walked back to my room, shaking my head.
I just got to my room and was getting into bed when my two daughters came to the room. They knocked and I told them to come in.
They were still naked when they came in. I told them to go put some clothes on but they approached my bed anyway.
Sandy then said, "Daddy, it seems the three of us have a problem. Today, we saw you jerking off and tonight you saw us using our dildos. And, today we have seen each of us naked and Diane and I thought we should do something about it."
I looked at the two of them and asked what did they have in mind, as my cock was getting rigid under the covers.