As the question is a bit unclear it is difficult to say what this relates to. I assume you are talking about a psychological/social experiment of sorts. But I still think this is a Dad joke and the subject is Australian fauna, more likely Kangaroos or Emus, which cannot walk backwards or talk.
'olleh'
"Hello" in Tausug language is "Marayaw."
"Hello" in Cree language is "tansi".
In Kashmiri language, "hello" is said as "salaam aleikum".
Hello comes from Hell in alien language
"Selam" is hello in Tigrinya language.
"Hello" in Aymara language is "Janiw."
hello my dear friends
In Dakota language, "hello" is translated as "hau."
The word "hello" in Ifugao language can be translated as "Kumusta."
You say "hello" in the monkey language by throwing a banana to the person that you are greeting.
Hello in what language?