so many, so many to choose from.
I think the stupidiest has to be -
"No asking questions during the watch-tower or book study"
I mean, god forbid turning it into something actually resembling a study where people might learn something or even think. Don't make the conductor have to think on his fee eithert, he is not allowed to think, only quote WT doctrine. I got conselled after the meetings many times for asking questions and debating during the book study.
a close second, would be the rule that says -
"Sisters can't conduct the little meeting before field service, unless of course there are no baptized men"
I can't tell you how many times I would be the only baptized man going out in service and have to conduct. There were 10 women who where 10 times more qualified than I was, but it didn't matter. I am sure they all enjoyed the prays I had to give too, the jw equivalent of "rub a dub dub, thanks for the grub."