a post-doc was doing a guest seminar at my institute and at the beginning of his presentation he was explaining why he chose birds for his evolutionary analysis - so he said "well first of all, because birds are the best and most interesting animals and it's fun to study them" and a few professors in the room gave him a very serious nod
I still think that my favorite urban legend/folklore fact is that there are certain areas in New Orleans where you cannot get a taxi late at night not because it isn’t safe, but because taxi companies have had recurring problems of picking up ghosts in those areas who are not aware that they are dead and disappearing from the cab before reaching the destination and therefore stiffing the driver on the fare causing a loss for the company.