I have shared pics of my wife with a couple of my friends. I have not posted many, my wife does not like me to post her pics. My friends have enjoyed them and her though.
I believe my best experience was having a MFM threesome with my wife for the first time. She had fucked this guy before, so she was comfortable with him, so we got a hotel room and he met us there. He didn't wait long until he had he dress and clothes off and was eating her pussy. She then sucked his dick and laid back for him to enter her. I was watching and I was mesmerized watching her fuck him and him her. My dick was rock hard. This was years ago and he did her bareback. When he finished I hopped right on her and she came as soon as I entered her. She is multi-orgasmic and had already had several orgasms. I had never known how good the sloppy seconds could be. I came very fast. We spent the whole afternoon and part of the evening taking turns with her and a couple of time split roasting her. She loved it. It was her and my first threesome. I'm still hooked.
In the pussy, especially if it's sloppy seconds.