My aunt by marriage to my uncle (my mom's brother) lived with us while he was living in Europe for 4 months on a business project.
She was 38 and I had just turned 18 and was getting ready to go to college. She was a larger woman...she had huge breasts. She did not dress sexy but in fact dressed very conservatively..dresses and sweaters. She did not give sloppy kisses like some aunts do, but she was affectionate and loved giving lots of hugs. She had a very contagious laugh and was very happy to be around.
She slepped in the guest room which was at the other end of our house in the basement. There was never any sexual chemistry with her or anything that led up to what happened. She never flirted with me, that just wasn't her personality. She did have a cute face...but wasn't 'pretty'. She was of Italian descent and had nice olive colored skin.
The 'incident' that happened was innocent enough and alot like the other stories you read on the internet. At 18, like most other boys, my hormones were raging and I was addicted to masturbating. I woke up EVERY morning with a hard-on. I came from a very conservative family and my parents never talked to us about sex or the birds and bees so we were pretty much left to our own discoveries and learnings. I didn't know anything about masturbating when I started puberty...literally nothing. And it was by accident that I noticed if I rubbed my penis while I laid face down in my bed that it felt good. I actually didn't learn about the 'real' way to masturbate (stroking my cock with my hands) until I the summer that my aunt lived with us. So, the way that I made it feel good was by moving in a fucking motion face down against my sheets and in my pajama bottoms (no underwear). Again, I didn't know it was a fucking motion as I was completely inexperienced. I was a very late bloomer compared to my friends and I didn't enter puberty until I was 15.