I would never say willy or fanny now as an adult, but when I was a little kid, you would say, you know, girls have fannies and boys have willies, you know, but it's just not used anymore.
我作为成年人现在绝不会说“willy”或“fanny”,但小时候,人们会说,你知道
,女孩有fannies,男孩有willies,不过这种说法现在已经不常用了。