My favorite rule came direct from the Borg, don't hold your significant others hand during the prayer cause it can be distracting.
I remember this one. I got a phonecall from an elder for doing just that in a Sunday meeting. He tried to counsel me on it, I asked for a scriptural basis for his rule. He said something about "modesty, decency" etc. but i asked for a scripture. He had none but Watchtower quotes.
I countered with "God is love", where better than to show love than in Gods house? Is God offended by love?
I won.
A more ridiculous one though, a sister i know was counseled for wearing a thong because her lack of panty line was distracting.
Distracting for who? Who's checking out her ass enough to be distracted? The sister should have said "im not wearing a thong either... (wink)"