self-propelled sandbag

self-propelled sandbag

slang A somewhat derogatory term United States Marine, possibly alluding to a sandbag's ability to catch and stop bullets. Popularized during the Gulf War from 1990–1991. Primarily heard in US. I heard Congress is sending even more self-propelled sandbags to Kuwait.
See also: sandbag
Farlex Dictionary of Idioms.

self-propelled sandbag

n. a U.S. Marine. (Persian Gulf War.) Those guys are just self-propelled sandbags. They are fearless.
See also: sandbag
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
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  • nut-foundry
  • nuthatch
  • nuthouse
  • saltine
  • redneck
  • nuttery
  • alley cat