My American husband says that in America raised index and little fingers mean Bull S**t. In Europe it means cuckold. With the index and middle fingers it depends which way you present them. Front on victory and back facing f*** you. I too (I'm Australian)have wondered about the rabbit-ears photo sign, while having the idea it was rude in some way. H says that the rabbit sign is used in America but he has usually seen it in cartoons. He has also seen the cuckold sign used in a french cartoon of a photo shot. I'm sure I've seen various forms of it in news film, taken in the Middle East, where there are big groups of kids too.