You're absolutely right! It's just SO VERY entertaining to put JWs on the spot. I saw one turn up her nose to me in a shunning-strike, so I walked right up to her and hugged her in the middle of the grocery store and said "Hi!!! It's so good to see you!! How have you and (hubby) been?? Your kids must be so grown up by now!! Well, gotta run, things to do... people to see! Say hello to the Friends for me!!"
Meanwhile, she's just about soiling herself in terror at the thought of being hugged by someone she's not sure if she should shun or not (I am not DFd or DAd, to the best of my knowledge). And I'm long gone, laughing myself silly that I've been so LOVING and FRIENDLY and put this person into shock at the same time.
Kill them with love and kindness. It's priceless.