Flushing the loo

I learned the meaning of Loo when I was in 6th or 7th grade by reading The Loo Sanction by Travanian (author of The Eiger Sanction which was made into a movie starring Clint Eastwood).

I did a report on Travanian (he was my favorite author at that time - I still like most of his novels).

It was difficult to do as he had only ever given out one interview and made a point that no pictures be taken - he was a wack job (or at least he acted like one for the interview). He answered the questions as if he was the main character in his novel Shibumi (in my estmation his best work).