Bunny ears? Bunny ears?! When I was young, putting two fingers behind someones head meant horns, not bunny ears. ("I grow old, I grow old...", but I shall not wear my trousers rolled)
Anyway, I probably haven't done a peace sign since the early 1970s.
Returning to something Kinsao said, regarding the two fingers with the back of one's hand showing, there is (or at least was) a gesture in the Philippines that meant the same thing. It is a little more difficult to do, but rather more graphic.