Really whenever it has to
People in England call the bathroom the loo. I have no idea why.
Toomas Loo goes by Tom.
a zoo
the toilet
i need to go to the loo!
you go to the loo
It helps you go to the loo.
if they are dead they go down the loo but if they aren't dead and have gone missing check the loo any way just to be on the safe side
Capybara
go to the loo
a loo loo is a toilet where you do business.
The capybara is in order rodantia.