A goofus often dedicates
every minute of every day to being a gangster or
something similar (and usually thinks
other people live the same way as them, or wants to be the same thing as them).
He/she spent his/her entire life
trying to pull the strings of other people who were were too uptight to be in that life only
gangsters knew. He/she was good enough at it,
you wouldn't even think he/she was ever a goofus.