Pumps' Perplexities

The following is just an exercise in mental thought, and
nothing more.....

Does anyone know how many names/words we have
for the little room down the hall or in the back of a
public building or restaurant?.....Here goes......

The John
The Head
The Facilities
Ladies Room
Mens Room
(Countless thousands of Boys/Girls in different languages,
and themes.).....
The Can
The Crapper
Restroom
Water Closet
Comfort Station
Lavatory
Out House
Latrine
The Sh*tter
Potty or Port-a-Potty
The Powder Room
And last but not least.....The Toilet......Pumps