For many years I was the treasurer at our church. When we got a new Chairman of the Finance Committee, I warned him. I come home from the gym and after my shower I go straight to my jammies. You are welcomed to come anytime unannounced but just don't expect to see me all dressed up and with my makeup on. It was a an on going joke that he forewarned others what to expect, haha.
What a hoot! Must have been a new guy on the job at ADT. Wouldn't it make more sense if you gave the wrong safe word? Or maybe they need to set you up with an UN-safe word too, just to be clear.
I would have been hard pressed to open the door in that state! Maybe you should have offered them a glass of wine to calm their nerves.