Amerism

American term or expression; American practice or custom; loyalty to the USA.

"Behavior' is an Amerism.

12 AMer

People who spend most of their lives at night and either acting suspicious, disruptive, or insulting to people whom they do not know of, Usually around 12AM. Can also be known as a "Midnight Hyena".

This 12 AMer can't take his eyes off of me.