YOU SAID:
I'm going to the washroom
INTO JAPANESE
私は洗面所に行きます
BACK INTO ENGLISH
i go to the bathroom
INTO JAPANESE
わたしはお手洗いに行きます
BACK INTO ENGLISH
i go to the restroom
INTO JAPANESE
私はトイレに行きます
BACK INTO ENGLISH
i go to the bathroom
INTO JAPANESE
わたしはお手洗いに行きます
BACK INTO ENGLISH
i go to the restroom
INTO JAPANESE
私はトイレに行きます
it is unlikely that this phrase will ever reach equilibrium