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mdo is a suffix meaning "my dick off." It is used by appending the first letter of a gerund in order to create an acronym that signifies one is going all out to complete a task. It works on the basis of hyperbole by stating that one is working so hard on something that it somehow causes their dick to fall off.
Possible uses could include:

wmdo = writing my dick off
pmdo = presenting my dick off/proofreading my dick off/partying my dick off
amdo = animating my dick off
smdo = sleeping my dick off

...With infinite possibilities
by Friar Sloth November 06, 2010
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Aug 9 Word of the Day
A term coined by Terrson to represent a form of Jenga where one removes an article of clothing whenever the tower falls.
It was a fearsome sight indeed after the tower fell for the last time, after that, strip jenga was forever banned in the lounge.

<Terrson> My name shall not go down in history as the guy who codified Strip Jenga.
Guess again, Terrson.
by OmniBot August 05, 2008
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MDO stands for A Maori Day Off. It means you just cbf going to work/school/etc.
Example 1: Chuurr bro I'm stuffed after this big weekend I'm gonna have to take a MDO on Monday
Example 2: I can't wait to see what Scott does on his first big MDO.
by Cantwaitformymdo November 11, 2019
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short description for 'more day old.'

1. Used to describe when something is out of fashion.

2. When you are totally completely over something.
by bgrizzly July 01, 2009
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Modern Day Outlaws; A splendid TFC clan led by Helix. MDO ranked 3rd in the Iron Division of the UGC League in Season 3.
"i hate MDO they always fucking kill me"
by ... September 30, 2003
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