We've done it a bunch of times. My wife loooooves being a CuckQuean (I have no idea why it's spelled like that, but it's the correct spelling).
My wife loves to sit and watch the show. She makes herself a drink, sits in the comfy chair in the corner of our bedroom and enjoys the show. Sometimes, she's join in later, sometimes not. She also has a kinky side and love degradation, so if we say things to her like "this pussy feels so much better than yours", "Omg she suck cock better that you" or "her asshole feels so much tighter than yours" etc ... you get the point ... she LOOOVES that.
Being as how we like kink/bdsm play also, a couple times a friend and I tied her down to the chair while she watched and told her things like I said above, and my friend would look directly at her while she was sucking me and tell her "this is how he likes his cock sucked, not that pitiful way you do it" and "He has to come over my house every week and fuck his black slut because youre no good at fucking" etc .... we did this, while also once in a while reaching over to smack her face or a breast or spit on her (wife loves all this) ... after an hour, we untied her and let her join and the chair was soaking wet.
First time my friend and I did this to her, was also the first time my wife had met her. Wife had school on Tuesdays so she told me to find somebody to do if I wanted those nights that semester, so I used to go over this woman's house almost every week. When I told the friend what we were going to do, she says "I dont know if I can do all that to her, she's been so nice letting you come over every week" I had to assure her that my wife would love it.
But again this is the most extreme CuckQuean session we've done ... most of them have just been wife watching, telling her how good the other woman's pussy, mouth, and ass feel etc ... with maybe a little degradation thrown in ... wife really gets off on it.

