Threes

This is a story about my older sister. 

My sister was a major introvert. She was always in her room if not at college, she rarely went out voluntarily. She was fairly chatty with me and my mom, but she usually avoided any guests that came over to visit.  The most she'd ever do is just say hi, grab some food and go back to her room. If she ever did stay around guests it would be at request by my mom, even then she didn't talk much with them. Would just answer questions thrown at her and then keep quiet. 

We weren't very "close" I'd say, at least not since she went through puberty. So that's been a few years now. I only knew whatever she decided to share about during our meal times at home but other than that I usually minded my own business. 

I should describe our family a bit. There's me, your average looking guy. I was in ok shape due to the physical activity at school but that's about the most exercise I get, other than that I'm home gaming if not going out to movies with some friends. Since this is gonna be a sex story, what's between my legs is pretty average, but I can shoot hard enough to hit my own face. 

My mom is on the petite side, but she's quite curvy in the right places. Huge boobs, with massive nipples that sometimes look so long they seem folded up in her bras and shirts. Slim tight waist and big butt. She keeps fit however with daily trips to the gym and yoga. Her outfits usually don't leave much to the imagination, when her ass and pussy lips seem to eat her pants. 

Then there's my sis, she's always been somewhat tall for her age, but quite lanky. However, after going through a late puberty, her body was like nope this is changing. She got significantly taller, standing around 6'7" now, she has to be careful not to hit her head while walking around the house. She also seemed to effortlessly put on muscle, where she looked toned in all the right places, tight and big ass like my mom. And just like my mom she also ended up with huge breasts and enormous nipples. Since finding clothes at her size was super difficult, nearly everything was tight or short on her. There were almost always camel toes in jeans, leggings whatever she wore, xl shirts would usually show a bit of her abs and since her breasts were so large they usually ended up tight around her chest. No bras fit her properly, so her nipples were always visible pressed up running upwards along her breasts. 

But one early morning, by early I mean like 4am early, our family dynamics changed completely. 

That night I was out with some friends and got home late. Having drank a lot (not alcohol) had me getting up from sleep to pee. 99.9% of the time I'm a heavy sleeper nothing can wake me, for some reason this night having the need to pee did. 

Living in a small apartment, having only 1.5 bathrooms. For those that don't know, that's one bathroom with only a sink and toilet, and 1 full sized bathroom. The half bathroom was in my mother's bedroom so me and my sis had to share the full sized bathroom.

I was half asleep making my way there. I didn't pay attention to the light being on from the glow under the door. So opening the door to make my way in the sight in front of me, made all the blood rush to my head. Exiting and Immediately shutting the door I passed out. Waking up after what felt like ages, only to be in the bathroom I just exited. 

Adjusting to the bright lights, I see my sister standing over me in just some panties and a t-shirt.

"Wake up, wake up" she said.

"What, what just happened? Was that…" looking

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