Delivery for the SIL

While I’m usually stuck in the same office a while back I had to go to a business appointment in another city. Not even a proper trip, just a long drive returning the same night. My wife asked me to drop off a bag of clothes at her sisters who lives in the same general direction (or as my wife put it: right on the way).

It was a long drive in the rain and I was getting a bit bored. So my mind started wandering and before I knew it I was fantasizing a bit about my SIL. My relationship with her is weird. Short version is: she’s a real bitch to the people closest to her, including her husband and my wife. But she’s never been anything but nice to me, sometimes even inappropriately so. Like when we meet she hugs me a bit too long taking care to press both of her (very nice) breasts against me, stuff like that. This is confusing as hell for me, I don’t like her but do think she’s hot. Because of the mixed feelings I’ll never let her know I feel that way, but I’m not above having a wank thinking about her amazing tits every once in a while.

I arrive at the house and there’s no car in the driveway. She and her husband only have one car so at least one of them could be home. Nobody uses their front door so I walk around the back and knock on the back door. No answer. A bit annoyed that I took the detour to find nobody there, I text my wife asking if she let her sister know I was going to drop by. My wife confirms she did but I may be a little early.

I don’t want to come back later so I decide to try the sliding doors next to their back door and they open. I walk into their kitchen, announcing myself. No response. I put the bag of clothes I’m supposed to deliver on the table. I text my wife that nobody was home but that I left the bag in the kitchen. I’m still way early for my appointment as I planned stop here for a coffee before driving on again, so I contemplate what to do.

Fantasizing in the car left me horny with a semi-boner. Horny always puts bad ideas into my mind. The door into the laundry room next to the kitchen is open and I see a heap of laundry which seem to contain panties. A horny voice in my head tells me that this is a perfect opportunity to get reacquainted with my sister in laws pussy smell. I love sniffing panties. I head into the laundry room and quickly go through the heap to grab a few panties that look promising. I walk to the other side of the house to their toilet and lock myself in to prevent someone barging in on me. I close the lid and sit down to enjoy the smells. Boy they don’t disappoint. Within a few minutes I’m high on my SIL’s pussy smell and my hard dick is leaking precum on the floor.

I pause to savor the moment. Sitting there quietly I realize I hear something upstairs. The only room on the floor above on this side of the house is their master bedroom. If there’s someone at home I feel it would be weird to hang around downstairs without going to find out who’s there. I pull my pants up and pocket the panties. Walking casually, trying to make my boner go away or at least less obvious I go upstairs. As I approach the bedroom, the door is ajar and I hear buzzing. I cautiously peek inside and I am blown away by what I see.

My SIL is tied to the bed, spreadeagled, completely naked except for an eyemask, a ball gag and a huge massager (one of those Hitachi-style things with a power cord) tied to her leg vibrating against her clit. My wife told me some time before that my SIL and her husband were going through a rough patch and one of the things they were trying was spicing it up in the bedroom. I guess she wasn’t lying. I stand there, first completely shocked, then just feasting my eyes. My penis hardly softened during my walk upstairs and the view makes it rock hard again. I push the door open to get a better look but it creaks. My SIL responds by trying to talk through her ball gag.

In the end I can’t think of anything better to do then take the ball gag off. She immediately starts to apologize: “Oh honey I’m so glad you came back. I hope you’re not mad anymore, I shouldn’t have said that.” No clue what happened but she clearly thinks I’m her husband. My SIL pissing off her husband mid sex seems pretty in character for her. She continues: “I’m so fucking horny, let me make it up to you. You can even cum in my mouth as a special treat”. She promises to try to swallow and not spit it out this time.

This is where I should have cleared up the misunderstanding, but like I said, horny makes me stupid. I decide she could do with some punishment for being so nasty to her husband. And as I’m here (and extremely horny) it might as well be me who benefits. I replace the ball gag in her mouth. She was wearing it anyway and it will be a lot easier to keep my mouth shut if she can’t talk to me. I sit down on the bed next to her. I pinch her nipples and take her tits in my hands. The ones I’ve admired from afar and came to before. I don’t know what their size is but they are huge. When my SIL starts moaning softly I feel encouraged and begin to lick her nipples. I slowly work my hands down her belly and dip a finger into her clearly very wet pussy. Thinking about the panty smell I lick her juices off my finger. Wow, she tastes as good as she smells.

I love eating pussy so I position myself between her legs and remove the massager to get better access. I take off my pants and wank myself while slowly licking her clit, enjoying her taste. She starts to moan harder. When I gently push a finger in, her body responds, she clearly likes that. I think about fucking her, but for some reason that feels wrong. (yeah I know, that’s a silly place to draw the line but like I said, she confuses the hell out of me). I figure out really quickly that one or two fingers is just the start for her. Two become three become four and I’m into new territory here. One of my biggest unrealized fantasies is fisting a woman. Apparently size has been doled out a bit unevenly in this family, my SIL not only has huge tits compared to my wife’s petite ones, she also has a massive gaping pussy compared to my wife’s nice and tight one.

There is a bottle of lube on the floor next to the bed so I grab it and spread it liberally on my hand and her pussy lips. I go back to four fingers and gently try to add my thumb. It stretches her a bit but the sounds she makes and her body language seem pretty encouraging. She clearly likes to be filled to the max. I start pushing and my hand slides in until her pussy encloses my wrist. I sit there speechless, just looking at my hand inside her. It’s so hot. I take my phone out and take some pictures. I already know I’ll be using those to cum to for years to come. I slowly start to move my hand in and out. After taking a video of that I put the phone down and start licking her clit again while I keep fisting her harder and harder. My SIL’s breathing tells me she’s about to climax. I intensify my licking until she cums really, really hard. Probably good for the neighbors she’s wearing that ball gag. The feel of her pussy contracting around my wrist drives me wild.

I sit back, pulling my hand out, enjoying the view of my dripping mess of a SIL and playing with my dick. I use the panties I grabbed downstairs to clean up my hand and her pussy until they’re soaked with her pussy juice. I get up, walking around the bed jerking off while taking pictures from all angles. After she’s caught her breath, I decide to do a comparative research experimentl. My wife gives the best blowjobs I’ve ever had. Time to see if that runs in the family. I take off the ball gag again. She starts telling me again she’ll do anything I want. I position myself over her mouth and push the tip of my penis against her lips to shut her up. She softly kisses it.

I slowly start pushing myself deeper into her mouth. It feels really good but I have to remind myself to be quiet. I realize I must have been there for a while and am running out of time. I have my appointment to get to and my BIL will probably return at some point as well. As I’ve been horny as hell the whole time I’ve been there I am almost ready to cum anyway. I fuck her mouth deeper and harder and it doesn’t take long for me to explode into the back of her throat. Remembering her remark about spitting I decide to punish her a bit more: I pull my dick out and immediately replace the ball gag.

PNC sets in, I need to get out of there. I grab my pants, walk out of the bedroom, close the door behind me and quickly dress myself. Downstairs I get nervous about being caught and run outside to my car. I grab one of the plastic bags we keep under the front seat and put the wet panties I nicked in there. They will go into my masturbation stash at home. You have to think ahead 😋. Nobody’s seen me sofar so I drive off to my appointment.

When I get home in the evening my wife tells me her sister called to thank her for the clothes. My SIL apparently was very pushy to understand what time I was there.

It’s been a few months and I still don’t know if she figured it out. The pix, video and panties have seen some good use though. My favorite one shows her full naked body with my fist in her. During my gooning sessions I keep wondering what would happen if I’d send it to her. Horny makes stupid…