英语中，上厕所的委婉表达有哪些？

女：May I go to the women's room?

男：May I go to the men's room?

美剧里看来的

是一样的，呵呵
1.I want to use the batheroom/restroom.
2.I want to answer nature's call.
3.Excuse me please.
4.I'm gonna go wash my hands.

简单点就用go to the washroom就行了。

要装得更虚伪文雅一点，可以说answer the call of nature，女的可以说pick some flowers。

直接来个Excuse me 男女不分哦（不是厕所）

Excuse me,may I use your bathroom?
Excuse me,can I leave for a while?
give me a moment

比较文绉绉的说法：I wanna answer the call of nature.
男：I wanna pee.
女：Where could I wash my hands?(I wanna wash my hands)

Excuse me , I want to use the lady's room.
或者 直接说 restroom