YOU SAID:
Yay! I'm gonna be a big brother! Where is my younger brother or sister?
INTO JAPANESE
イェーイ!私はお兄ちゃんになるんだ!弟や妹はどこだ?
BACK INTO ENGLISH
Yay! I'm going to be a big brother!
INTO JAPANESE
イェーイ!私はお兄ちゃんになるんだ!
BACK INTO ENGLISH
Yay! I was going to the brother!
INTO JAPANESE
イェーイ!弟の方に行くはずだったのに!
BACK INTO ENGLISH
Yay! I was supposed to go to my brother!
INTO JAPANESE
イェーイ!弟の家に行くはずだったのに!
BACK INTO ENGLISH
Yay! I was supposed to go to my brother's house!
INTO JAPANESE
イェーイ!兄の家に行くはずだったのに
BACK INTO ENGLISH
Yay! I was supposed to go to my brother's house.
INTO JAPANESE
イェーイ!私は私の弟の家に行くはずだった。
BACK INTO ENGLISH
Yay! I was supposed to go to my brother's House.
INTO JAPANESE
イェーイ!私は私の弟の家に行くはずだった。
BACK INTO ENGLISH
Yay!
INTO JAPANESE
やったね!
BACK INTO ENGLISH
Yay!
That didn't even make that much sense in English.