g'mrnaffanoon - A greeting that makes no sense but somehow works because eve

A greeting that makes no sense but somehow works because everyone is too tired to argue.

I said g'mrnaffanoon to my boss and he just nodded and went back to sleep.

I used g'mrnaffanoon in a group chat and no one said anything.

My friend said g'mrnaffanoon and I thought it was a new language.