What was I thinking.

My sister in law talked me into a 3 way with her and her husband (My step brother), We had been out clubbing together and went back to their place, We were just sitting in the hot tub which we have done a time or two at the end of the night and my step brother came out, I was just in my thong and bra which is what we were both wearing. My bra was lacy and see through and my sister in law commented on how tiny my nips were in relation to the size of my ** (D).
Well it wasn't long and she convinced me to whip one out to compare to hers and my brother in law who I had lived with from the time I was 5 until I was 10 when he turned 18 and moved out so now at the ripe old age of 22 I am in a hot tub with him and his wife who I have become close to and we get together at least once a week and me and her each have a ** out while he is judging them, He moved in front of us and reached out, He squeezed hers and then mine, He rolled each of our nips between his fingers and then stood up.
She basically pulled his underwear down and out popped a reasonably impressive **, I was a little surprised at how rough and veiny it is but it also had decent length and girth and she started stroking him, I was like "Whoa, ** just got real" and then all of a sudden he was standing in front of me, She was coaxing me to ** it and I did, Out of the tub we got and into the living room, The little bit of clothes we did have on came off and I was laid back on the couch, He knelt by my head, I sucked him and my sister in law spread my legs, I only took his ** out of my mouth long enough to say "Oh my gawd Stacey...I don't know" and he shoved it back into my mouth as her tongue touched my inner thigh and I moaned as she slid her way up and when it touched my ** lips I grunted and moaned and I am pretty sure I had at least a mini **.
Sorry fellas, Not a lot of details from here on because it was a bit of a blur, lots of licking, lots of sucking, We did however do the classic me on my back, Him in me and her sitting on my face, Licking ** was better than I expected and we did quite a bit of it. After it was all done they made sure I had the majority of my clothing, Couldn't find my bra but then he drove me home, We had a little make out in my driveway and then I crawled over the console and rode him until we both got off once more.
I don't know if it will ever happen again but i would be willing.