1 definition by gumby91

Top Definition
A Top Secret Army Military Occupational Specialty Code also known as The Army shamurai. unLike most samuris, a 99 sierra is considered one of the most laziest peaices of shit on the planet. sierra's are very proficient in the art of "shamming" known only to the trade. Some 99 sierra's have been rumored to have shammed out of thier own training. It should be understood that you will never encounter one, they are quick, and very silent.
that 99 sierra was a shamuri master
by gumby91 October 10, 2009

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