A colloquial and (intended to be) non-pejorative term for a friend. Based off of the 19th century African American civil rights leader Booker T. Washington.
When you fail at something in life (eg. failing an exam or not getting a job), go home and spend an hour just standing in the shower, propping yourself up against the wall with your eyes on your feet.
Caleb knew the only thing to do after he didnt get prefect was take a failureshower.