[jgtrosh]

you can say « les vécés » (or « le vatér » if you're an old Belgian man maybe), but more common are « les toilettes », « les chiottes » (vulgar but very common)

[kergonath]

> « les chiottes » (vulgar but very common)

Don’t use that word with people you don’t know, though… Being rude when asking for something is not the best strategy.

[petesergeant]

Mmm, same word as "shitters" in British English, with what I have to imagine is an identical etymology

[uxp8u61q]

It's not a daring conjecture that the slang word for toilet has an etymology related to shit.

[carlmr]

In German there's "Scheisshaus" (shit house)