Vocabulary
一姫二太郎
いちひめにたろう
it's good to have a girl first and then a boy
expression
Example sentences
第二子（だいにし）は男の子（おとこのこ）だって。これでめでたく一姫二太郎（いちひめにたろう）ってわけだね。
Your second child is a boy? Lucky you! Things are going according to the saying - Have a girl first and a boy next.