How many ways can you name it?

Just came back from the toilet.
Stared at the sign for 10 seconds, it reads: "Lavatory".
How many ways can you name it?
Toilet, Washroom, Restroom, Lavatory, Latrine or not very acurate Bathroom...
Anyway it seems to be a really important place to all of us! Can you find anything else that has 6 names...?