Recently when talking to Jeff [Grant] I queried the word KYBO which has been with us since the adoption of Collins Dictionary in 2007. I was not challenging its validity but rather the definition which is given as "Australian slang". I pointed out that I had used this word as a child at a YMCA summer camp where it was the official term to be used for the toilet. Jeff is doing further research into the origin of this word but I thought I might relate how I first encountered it and the conclusions that I have drawn as a result.
"Carry on up the Kybo,"
Word Ways: Vol. 49
, Article 8.
Available at: https://digitalcommons.butler.edu/wordways/vol49/iss1/8