The term originated on Dec. 30 2004, when someone, under the guise of "having to leave to hang out with Don Masterson," really just went home to drop a
deuce so large,
God himself couldn't create a larger
dump.
Usage includes but is not limited to: "Hanging out with Don," "Big Don is coming over," "Big Don has launched a full scale attack," or even "D(on)-Day."
Usage does NOT include referring to the actual
deuce in question as Don Masterson, but actually the action is what is being referred to.