a war wagon in context of use in online mixed martial arts communities is when a thread is created within a mma forum to bring together the fans of a fighter who is about to compete. In the thread most comments / post will be in support of the fighter.

When you eat dirt for the first time and leave your family to build a shack in the woods

A vehicle, usually a van that has a engine that is suped up to run as fast and have as much horsepower a possible. And is armor plated with heavy machine guns mounted in and/or on it and is sometimes armed with bazooks ect. so that it can be used to rob banks and/or kidnap women ect. and to excape from and fight police.

A vehicle that is usually a van that is armor plated and has heavy machine guns mounted in and/or on it and that sometimes has bazooks stored inside. And whose motor is suped up to have the highest horsepower possible.
Most guys make there own war wagons. It is mostly used to go from town to town and through the country robbing banks and/or kidnapping women for surprise sex later ect. and to outrun and fight cops.