u/RecipeFar6093

Posting here for the first time, for context, me and my sister have been pretty close and have done sexual-ish things before but this is something that happened yesterday in the evening. I was in my room, sitting on my gaming chair, wearing a plain t-shirt and some boxer shorts, turned away from the table and I was watching my phone, I think i was scrolling on instagram or watching some reddit posts, that's when my sis came into my room, i looked at her briefly, she was wearing a black top with denim shorts and white socks, prolly returned home from somewhere and had home clothes in her hand, i didn't pay much attention then and simply returned to my phone

But then she closed the door and turned to me and asked whether she could change her clothes in here cuz apparently mom was looking for something in her room or smth and wouldn't leave immediately, so i just told sis that she could change her clothes and that it wasn't a big deal, like I said we're pretty close but she hasn't like, changed clothes in front of me in years but i didn't mind it because i thought she'd be like pretty quick with it.

Well so I thought but just after i gave her permission she immediately took off her top, throwing it on the floor towards a corner in my room, now my gaze apparently shifted to her behind my phone and i probably blushed a bit because she wasn't wearing a bra so i was basically seeing her boobs and her light brown nipples, one of them was hard, probably because of the air while the other looked soft. I was like "hey at least lemme close my eyes!" But didn't close them for some reason, but then she said i could look if i wanted to, and well, i nodded, then she really slowly took off her denims and then her polka dotted seamless panties and she was taking her time, taking them off and throwing them on the floor, then she twirled around the mirror like she was doing it on purpose while I looked. By that point I had started getting a boner and it was quite obvious cuz i was wearing boxers, and damn i didn't think I'd get a boner but i also didn't think that her D cup breasts and shaved innie pussy, just seeing them would get me a boner she did notice it when she faced me again and she smiled after a moment saying something like "aww did you get a boner?" And i said yeah while she stepped closer to me, giggling and making some joke at the moment as she got dressed in her new clothes a white oversized t-shirt and red dolphin shorts.

But around the same time we heard our mom coming near my room and at that moment, my sis literally came over and sat down on my lap, in an effort to hide my boner as she later told me. As she sat there her firm ass was against my clothed dick and it was very subtly grinding against it, getting me fully hard. Now, mom entered the room looking for us to ask what we would eat for dinner, i didn't say anything and my sis just said "the usual" and after like 30 secs, mom left and she wasn't suspicious of anything because seeing her daughter in her son's lap wasn't really the strangest thing in the world, it was prolly registered as a background image especially cuz i had my phone in my hand as if i was showing something to sis.

After mom left, sis got off my lap and smoothed her shorts, and was probably blushing too and apologized for suddenly sitting on my lap and i said that it was okay, while i was clearly blushing too and kinda nervous, things were kinda awkward-ish but then she said "bye, see u at dinner" and left the room while i said yeah. Now, i had a boner in my pants but it was 6 PM, not really my time of jerking off, I threw my phone on the bed, turned to my pc and watched some gameplays on YouTube to distract myself.

Posting here for the first time, for context, me and my sister have been pretty close and have done sexual-ish things before but this is something that happened yesterday in the evening. I was in my room, sitting on my gaming chair, wearing a plain t-shirt and some boxer shorts, turned away from the table and I was watching my phone, I think i was scrolling on instagram or watching some reddit posts, that's when my sis came into my room, i looked at her briefly, she was wearing a black top with denim shorts and white socks, prolly returned home from somewhere and had home clothes in her hand, i didn't pay much attention then and simply returned to my phone

But then she closed the door and turned to me and asked whether she could change her clothes in here cuz apparently mom was looking for something in her room or smth and wouldn't leave immediately, so i just told sis that she could change her clothes and that it wasn't a big deal, like I said we're pretty close but she hasn't like, changed clothes in front of me in years but i didn't mind it because i thought she'd be like pretty quick with it.

Well so I thought but just after i gave her permission she immediately took off her top, throwing it on the floor towards a corner in my room, now my gaze apparently shifted to her behind my phone and i probably blushed a bit because she wasn't wearing a bra so i was basically seeing her boobs and her light brown nipples, one of them was hard, probably because of the air while the other looked soft. I was like "hey at least lemme close my eyes!" But didn't close them for some reason, but then she said i could look if i wanted to, and well, i nodded, then she really slowly took off her denims and then her polka dotted seamless panties and she was taking her time, taking them off and throwing them on the floor, then she twirled around the mirror like she was doing it on purpose while I looked. By that point I had started getting a boner and it was quite obvious cuz i was wearing boxers, and damn i didn't think I'd get a boner but i also didn't think that her D cup breasts and shaved innie pussy, just seeing them would get me a boner she did notice it when she faced me again and she smiled after a moment saying something like "aww did you get a boner?" And i said yeah while she stepped closer to me, giggling and making some joke at the moment as she got dressed in her new clothes a white oversized t-shirt and red dolphin shorts.

But around the same time we heard our mom coming near my room and at that moment, my sis literally came over and sat down on my lap, in an effort to hide my boner as she later told me. As she sat there her firm ass was against my clothed dick and it was very subtly grinding against it, getting me fully hard. Now, mom entered the room looking for us to ask what we would eat for dinner, i didn't say anything and my sis just said "the usual" and after like 30 secs, mom left and she wasn't suspicious of anything because seeing her daughter in her son's lap wasn't really the strangest thing in the world, it was prolly registered as a background image especially cuz i had my phone in my hand as if i was showing something to sis.

After mom left, sis got off my lap and smoothed her shorts, and was probably blushing too and apologized for suddenly sitting on my lap and i said that it was okay, while i was clearly blushing too and kinda nervous, things were kinda awkward-ish but then she said "bye, see u at dinner" and left the room while i said yeah. Now, i had a boner in my pants but it was 6 PM, not really my time of jerking off, I threw my phone on the bed, turned to my pc and watched some gameplays on YouTube to distract myself.