What is a kangaroo court?
A kangaroo court refers to a sham (false) legal proceeding in which a person is denied due judicial process or when the outcome of a trial is determined in advance.
It is considered to have originated in America, in the California Gold Rush of 1849 when people in court trials spoke with leaps of logic.
This meant that their arguments were not fully thought out and they were jumping from one idea to another.
This is called a kangaroo court, a kangaroo trial, or a kangaroo argument.