I know of one that sounds like an urban legend, but my aunt was with the brother who did it.
My aunt had a Bible study (read, study of WT publication with occasional reference to a snippet of Scripture) with a woman who had a little "yap-yap" dog. One day she took Comer Perkle, and elderly fellow, with her on the study. While the dog's owner was busy in the kitchen, Comer tried to shut the do up by thumping it in the head. It worked. The dog died. Comer put the dog in his breifcase and they didn't mention it to the dog's owner.
Another that is listed here as an urban legend happened to a couple that my family have been friends with for a number of years, although in the retelling it lost a lot of details—which is the nature of rumors.
i beleive the one with the car goes like this; a pioneer woman sees a car ad for a $20.00 bmw and checks it out. the lady says you have to pay before you see the car. so she does and its a brand new beamer. she asks why she is sellig it for so little and the woman says that it was her husbands who recently left her for a younger woman and sent her divorce papers and legal instructins to sell the car and send the money she sold it for to him in another country.
Russell and Eileen Cantwell, ex-CO and wife serving at Brooklyn Bethel, saw an ad in the paper listing "Car $50, sight unseen." The model, year, and condition were not mentioned. Only a telephone number was given. They went to the home and were immediately impressed by how nice the house was. With some aprehension they paid the $50 to the lady of the house and received the title and keys to a Mercedes (not very old, but not brand new) and this story by way of explanation: The lady's husband had just died, in the will he left the proceeds from the sale of the car to his mistress, his wife was the executor of the Estate, the mistress presumably received $50 for the sale of the car.
Last I heard Russell and Eileen still have the car. Since the Society uses quite a few Mercedes trucks for transportation, the mechanics there are able to keep the automobile running easily and relatively inexpensively.
Another rumor that I have a very difficult time believing was told at a quick-build. A building was just recently constructed adjacent to the lot where a Kingdom Hall was being erected and the there was a large pile of sand left over from the construction project. The brothers needed sand to mix concrete and offered to buy the sand from the developer of the adjacent lot for less than they would have to pay to have new sand hauled in. The developer loathed JWs and declined the offer. During the night a windstorm blew all the sand onto the future Kingdom Hall site. <cough>Bullsh**<cough><cough>
Respectfully,
AuldSoul