I was an adjunct with a university for several years. During that time, I procured numerous young men, from undergrad, through post-doc age for KK's pleasure and use. KK prefers variety in encounter partners, but she enjoyed the experiences so thoroughly that for a time, we considered taking in a student boarder, so that KK could have continuous, ready access to a young hard cock.
The procurement process was intensely erotic. I used what amounted to candaulism on young men I thought might be susceptible to having sex with KK. I had a laptop set up with some sexy photos of KK as my desktop background, and a screen saver slide-show that showed slightly more racy shots of KK. If the young man appeared interested, I used successively more provocative photos, conversation and in some cases video to seal the deal, and invite him over for a fuck session with my wife.
Most of the time, I got to watch at least some of the action, however KK would usually ask me to excuse myself at a point to give her private time with her young stud. Sometimes I got to participate in MFM action. It was always hot, especially seeing her groom an inexperienced young man into multiple cum-loads in her mouth, pussy and ass.