Don’t try this unless you know your friend can handle it.
Invite a friend over and let her know that you have dominant control over your man. Ask him to bring you drinks. When he delivers them, he is already in a serving mode.
Ask him to present his cock cage for inspection. In front of your friend? Absolutely, he should not question that.
Once he has completed this task, instruct him to go get a strap-on and collar and Leash. While he is fetching those, your friend might exclaim shock and awe. You can confirm if she wants to play or not, and either send him away or start in on the festivities.
Yeah, but now the friend knows.
My Mistress wife has discussed our “arrangement” with a few of her closest friends and most think it is kinky and only our business. Only one or two have come over to our home and witnessed in person my punishment or teasing sessions. But my secretary also knows and seems quite interested and has come over multiple times. No wonder I am well behaved at work too!