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2.
To screw someone over or to take advantage of them. The lowest act known to man.
Not only did he steal my wallet, but he used my credit cards. He is a real rat fuck or he really rat fucked me.
by sfguy August 11, 2005
 
1.
Origin: USMC
To steal or disorganize items that do not belong to you.
Office: Don't let George ratfuck my files while I am gone next week.
Military: Who ratfucked the MREs?
by Whorton August 29, 2003
 
3.
A military term. Refers to rooting through an assortment of items and only taking what you want/need. It usually involves opening up a package or something shrinkwrapped, taking the desired item(s) and leaving the rest behind for the next unsuspecting individual.

Term is used in the Infantry division of the Army when someone opens up an MRE (meal ready to eat) package and only takes the candy/cookies. This leaves the next person to a meal with no treat.
"Some asshole ratfucked my MRE and took the Tootsie Pop!"

"Who ratfucked the Costco potato chip assortment and only took the Doritos?"

"You dick. You ratfucked the mini-cereals and only took the Apple Jacks".
by Mrs. Stiteler June 19, 2009
 
4.
-verb
1. Slang. To rifle through something taking the one special part out of it leaving the dregs behind.

-origin
1940's era US Military, most likely the Army.

Related Forms
rat fucker, noun
1.We caught that fat profile bitch that stayed back in the tents rat fucking all the MRE's for the fatty cakes and candies!

2. Damn! My dad rat fucked all the cashews out of the mixed nuts again!
by dbldragons August 28, 2010
 
5.
Latin: Rodendum Copuli--the least amount of concern you can express for any given act.
I don't give a rat fuck what she said,I did not fuck her sister!
by vernon dutton January 20, 2004
 
6.
To win a political outcome through bullying, sabotage, arrogance and self-centredness.
"Those Chinese fuckers are trying to rat-fuck us," said Australian Prime Minster, Kevin Rudd.
by Linus12 June 07, 2010
 
7.
To go through something looking for one thing only to leave the rest for the next poor bastard.
Brown rat fucked the the assorted cookies taking the chocolate chip ones and leaving the oatmeal
by bigious alious March 15, 2009