Masturbated in front of sister....

My oldest sister was the first girl I had sex with she taught me how to pleasure a girl with sex but she was no virgin at 13 and I was 12.
She was already having sex with our uncles so my little dick was not doing much good so I started fucking my younger virgin sister later which was a big difference in tightness of their pussies.

I had a huge thing for my hot older sister. She knew, enjoyed it, and played it up for me by letting me touch her, pose her long nails to her body, and give her more than just "hello" embraces and full kisses. She was taking me to a part time job I had one afternoon, and, as it was a hot, humid day, and she was only dropping me off, wore a tiny, black bikini that got me instantly hard. Sister saw the bulge in my work jeans and slyly asked "Did I do that?", then told me, flat-out...If I wanted to continue doing what we do together, i.e.- the touching, kissing, and my requests that she'd fulfill, I'd show her how crazy she made me by, at the least, rubbing my cock through my jeans until they spotted (until I spewed inside my pants). I was halfway there anyway, so, I did it for her. Luckily, I worked at a garage, where messy pants were the usual.

My sister is 5 years older than me and when I was about 12 she asked me if I had ever cum. I didn't know what the hell she was talking about, so she dropped my trousers and pants down and showed me. It just took a couple of minutes and a shot it all over her face. I felt terrible but she just laughed, showed me her tits and kissed the end of my nob.

We are now both married and she is nearly 65 and we still do naughty things to one and other. For example, we 69ed just a couple of days ago, but we have never had full sex, that would be very wrong.

Are you a Clinton thinking oral sex is not sex? How would eating her pussy while she sucking your dick not be considered full sex.
Would it be okay for your wife and her husband to do 69 with each other since you don't consider it to be full sex.
Go a head and get your dick balls deep in her pussy and ass how much closer would it get you to hell than you are already or how much more wrong would it be than doing a 69?

My sister and I would watch each other masturbate she started asking me if she could do it to me and she loved it. She would always stroke me so slow and long that it would drive me crazy being so hard for so long. She would then just stroke like mad and giggle when I came.