ehhehe you can ask taxi drivers in Manhattan, for sure they would know how to say "get out of the way" in a way that even bats understand. There are Pimsleur tapes just for about anything, check if they have "dialects and slangs of American bats" :)
About bat stories, I remember one year when I was still in College, we came back home and we found our housemate half naked standing on the bed shouting in terror. There was a bat that was flying around him and he was too scared to go anywhere (apparently he has been there for about 30 minutes). Luckily for him we can back home to save the bat from his shrieks, can you imagine how painful and scary that would have been for the bat? :)