Warning: the following story contains graphic descriptions of very casual sex. If that is not to your taste, I would suggest you read something else. This is all complete fiction. I would never condone or tolerate in real life the behavior described in this story.
All characters are over 18 years of age.
I would recommend reading the previous parts of the Evolution series before you continue, as you may enjoy it better if you know the full backstory.
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Claire waited until she heard the shower running in her dad's en suite before she went down the hallway to his room. She hadn't showered yet, instead she quickly stripped off her running clothes, and dressed in loose shorts and t-shirt. The door to his room was open so she could see he had left the bedroom and gone into the shower.
I can't wait to see what he does with these, she thought to herself as she copied what her dad did with her pink panties, and left the thong under his pillow. Before she left the room, she couldn't help herself, she had to sneak a peak of her dad in the shower.
The door was open a crack, barely even an inch, but it was enough if she got close enough. She walked over quietly and leaned forward bringing her eye as close to the door as possible, her forehead against the door frame.
He was standing with his back to her, with the water from the shower spraying down onto his head and upper body as he washed his hair. He looked good from behind, she thought. But that's not what she wanted to see. She was starting to get nervous, she needed to get out of here before she got caught. She had just taken her head away from the door when he turned to his left to get more soap. Claire banged her head against the frame she was so eager to get a look. Fuck, I hope he didn't hear that thud.
Holy shit, he's hard, and it's even bigger than I remember, Claire thought. I wonder why he's hard, is it because of me? I hope it is, oh fuck that's making me wet.
Dad was really starting to get into shape, Claire noticed. He's looking good. But that dick, wow. Mom is such a lucky bitch, and Carla! And whoever else he screws with it. I wonder would he fit inside me, it's so thick. Jesus Claire, what are you doing, he's your father. Playing a little game with your underwear is one thing, but actually doing that is something very different.
Seeing Dad's cock again made Claire even more excited about leaving her used underwear for him. She had never been this wet in her life.
OK, I need to get out of here, I better not push my luck too much, he's starting to go soft now anyway. It's still massive hanging down between his legs.
I quietly leave his room and run into the main bathroom for a quick shower.
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I'm frozen on the spot, holding the black thong in my hand. When I brought the flimsy piece of material to my nose a few seconds ago, my cock reacted with a force I've never seen before. It went from flaccid to a throbbing baseball bat in less than ten seconds.
I have no doubt in my mind who owns them. I'm just back from a run with my 18 year old daughter Claire, and looking at the style of this piece of underwear, they are specifically designed for exercise. These are Claire's, no question. There is nobody else at home!
I bring them to my nose again, fuck they smell good. I look for the area that would have covered her pussy and inhale, yep that's the spot, the scent is strong here. I've smelled a lot of pussy in the last few years, but none come close to this. It's so fresh, it's making me almost unable to control myself. Knowing it's my daughter is definitely adding to the thrill.
I let my towel fall to the floor, and take hold of my cock with my right hand. I keep the thong held up to my face with my left, and I can feel the dampness from her sweat and pussy cream. I've only stroked myself five or six times, slowly, when I feel the familiar tingle, I'm close to cumming already. I take the thong away from my face and look at the part of the gusset that had the strongest scent of pussy. Then I look a couple of inches down the narrow string to the area that would have been shoved between her cheeks against her asshole. I can't help myself, I bring this to my nose for a sniff too. It's fucking divine. Not a strong smell, just a mild musk. I'm a dirty bastard, I know, but I can't help it, I want to get at as much of her as I can.
When I can feel my climax about to erupt, I take the thong and hold the widest part of the material that would have covered her mound stretched out in my left hand. I aim my cockhead at the center, then another two pumps and I unload. There's too much cum for underwear this skimpy to hold, but I fill the front to the brim. The rest falls on the floor beside the bed.
After I've finished shooting my load, I leave the sodden thong down on the bed and get dressed. I hadn't thought this through, I just got caught up in the moment. I hadn't considered what this could mean.
Claire being so brazen has really upped the stakes in this little game we're playing. She must have thought after all that it was me who came into her pink panties when I got them back from Jean. She would be right of course. No way would she have left this thong under my pillow for me to find if she thought I was just the delivery boy.
Now that I've cum in Claire's underwear, again, I know exactly what I'm going to do with it.
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Claire has showered and gone downstairs when I walk down the hallway to check if she's around. I quickly go into her room with her drenched thong balled up in my fist. I place it under her pillow, only this time I put it on top of her vibrator. My slimy cum is smeared all over her little toy, and some has dripped out on her pillow and the bed sheets too. But there is still a good pool of it still waiting for her in the thong.
Before I leave her room, I make sure to pull a string of the thong out from under the pillow so that she sees it there.
I feel a little bad about the mess I've made on her bed, but if my suspicions are correct, she won't be too bothered by that.
Now little lady, over to you! I bet you weren't expecting this back so quick.
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I feel a lot more relaxed after relieving myself, and I'm famished now. When I get down to the kitchen, Claire is standing at the cooker preparing dinner.
"Hey Dad, dinner will be ready soon. Are you hungry?"
"Starving, I worked up a big appetite this evening," I say.
"Thanks for taking me along on your runs. I'm really getting into it," Claire says.
"Love having you come along. You keep me on my toes."
When the food is ready, both Claire and I grab a plate and sit side by side at the high counter. We eat our dinner together like this, chatting the whole time.
"OK, I need to get some study done, see you later Dad," Claire says, then gives me a hug.
When she leaves the kitchen, I tidy up and put the leftovers in the refrigerator for Ben and Laura. Then I sit and watch TV for a while until Laura gets home.
