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RMB stands for - Rolling my brain. It’s taking rolling your eyes to the extreme. When someone says RMB they are so done with the subject/situation that their brain is literally cringing and rolling back.
Argh this creepy guy won’t stop messaging me, RMB!

This chick won’t stop preaching to me, jeeze RMB.

You like long walks on the beach? So boring, RMB.
by Purrpleeeee February 14, 2019
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3
Right mouse button. Example is related to game Tf2
Use your rmb to pick up and move that dispenser closer to our team.
by Master_Penetrate June 16, 2017
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5
(FINANCE) real estate mortgage backed securities; usually used to refer to the derivatives created by Fannie Mae and Freddie Mac that were used to create collateralized debt obligations CDO's.

Most economists seem to agree that the 2008 crisis was caused by the collapse of the real estate market, which was mainly caused by the toxic relationship between RMBS's and the CDO's created mostly with them.
For almost eighty years the RMBS business helped people buy homes, with few serious problems. Then Congress abolished Glass-Steagall, the banks merged and created CDO's, and total disaster followed.

And now our neighborhoods look awful as well.
by Abu Yahya April 05, 2010
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Acronym for Ring My Bell
To show that you are delighted, pleased, or glad over a particular action that someone did to/for you; to be excited by something.

Past Tense: Rang My Bell
"OMG RMB that boy is HOT!"
"Jen, your cookies just RMB"
by Maitresse99 September 29, 2009
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Stands for: Red Mystery Box, in the PlayFish Game, PET SOCIETY.

It's worth 50 coins, and is commonly used in various trading forums, for buying the cheapest items.



For Sale: 5 Black Ducks At 4 RMBs Each!
by urulokei March 04, 2009
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