YOU SAID:
I'm gonna poo my underwear
INTO JAPANESE
下着をうんこするよ
BACK INTO ENGLISH
I poop in my underwear
INTO JAPANESE
下着の中にうんこする
BACK INTO ENGLISH
poop in underwear
INTO JAPANESE
下着姿でうんちする
BACK INTO ENGLISH
poop in underwear
You should move to Japan!