The noise one makes when entering work and acknowledging co-workers. The grunt is understood between the two, and is usually stands for "fuck, another day at this shitty place!"
When I saw Fred as I walked into hell...I mean work, we looked at each other and grunted. He must be disgruntled too.
by ocu-pie May 04, 2003
Grunts.... Age of the Corps, 234 years of ass kicking, ball busting, days of death and destruction. Where every day's a holiday and every meal's a feast. We are A.L.I.C.E. pack operated, M.R.E. feed, beer cooled, green amphibious monsters who thrive on war. GRUNTS, Ooh-Fuckin-Rah!!!
Those Marine grunts are some baaaad motherfuckers!
by USMC MARC February 04, 2010