Vietnam War slang for a soldier spending weeks in the field humping the boonies and rotting away in the jungle, a grunt.
'Got a friend named Whiskey Sam
He was my boonierat buddy for a year in Nam
He said is my country just a little off track
Took 'em twenty-five years to welcome me back'

Johnny Cash - Drive On
by Stéphane Moutin-Luyat August 25, 2007
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