Used in military terminology to describe the mandatory task of providing security or lookout for anything from an ammunition arsenal to an empty barracks. Can last for a few hrs or 24 hrs. Usually given at the worst possible times and weekends to remind you of why you ever joined the military.
Marine: Woot woot!!! It's Christmas, time to go home!!!

1stSgt: Oh fuck no! You have duty Christmas day, don't bother going home.

Marine:FML.
by jmusmc85 June 6, 2010
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A word commonly laughed at by people no matter how mature you are.

It is normally laughed at as people use the word duty as slang for feces.
Person 1: IT IS YOUR DUTY!

Person 2: Hahaha......... duty.
by domki366 January 6, 2013
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the funniest word known to mankind
seriously just say it a few times and its hilarious
me and rob were cracking up all day about duties

Rob: Lucas have you performed your duties??
by JahLove October 29, 2008
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Diarrhea of the comical kind (which is all diarrhea).
Ahahah. Duty. Ahahah. Diarrhea.
by Didda Tinkle May 24, 2004
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The Honor in which a person takes upon him or herself to serve his God or country.
He was not hesitant do his duty in church today.
In the Navy I was proud to do my duty.
by DrewPdrawers July 24, 2011
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