To act in the manner of a warrior to achieve self
greatness, regardless whether task is large or
small; relying on the faculty of self to prevail in an otherwise risky or chaotic environment; to be fully committed to a high risk activity.
To run the shit.
Runner of the shit.
I can't believe he kayaked over that
waterfall, what a shitrunner! If you fly a
helicopter to get home from the
bar you are definitely a shitrunner. We need a shitrunner to operate this crazy thing.