When we were traveling across country, and lucky enough to stop at a restaurant to eat, instead of a stale, 2 day old, home packed sandwich, my parents would inevitably spy some well dressed family at another table. A discussion ensued between my parents if the offending well dressed people were JWs. Of course they were, no one else dresses nicely. They would get up and quiz the people, who always said an emphatic "NO!"
My brother and I always wanted to crawl under the table!