Here's something from an earlier thread of mine.
In conversation, a friend was telling me how he knows he's supposed to preach to his workmates, but he's not comfortable doing it. Rather than twisting his arm to preach, I gave him the perfect reason not to preach. I explained, "Well, I learned that you have to be really careful, because you have to work with them every day. And you don't want to be in front of a group of coworkers when one of them asks the 'kangaroo question.'"
Which, of course, led him to ask, "Kangaroo question? What's that?"
Me, playing coy, "Oh, I think I shouldn't have mentioned that." Of course, that statement just made him even more curious. So then I explained how it was not uncommon for JWs to get asked questions about the flood that we couldn't answer. 'Kangaroo question' was how kangaroos got from Australia to Noah's ark, then from Turkey back to Australia after the flood. Then he was really confounded trying to solve this riddle. I had to tell him that there was no solution to that, nor to a lot of other questions that I hope he never gets asked. Since I was the ex-bethelite, he wanted to know what to do with such a question. I explained, "Since there is nothing helpful published, if you get asked a question like that at the door, you have to say that you'll go and research the question... but you never go back to their door. If you get asked by a workmate where you can't run away, you have to say that Noah's flood is a parable and not literal."
Here's another thread about a terrible 1969 flood article failure:
http://www.jehovahs-witness.com/topic/183719/from-noahs-ark-australia-awake-jan-8-1969-pp-5-8