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Something that is very important and requires high intellectual thoughts. Something that is deep is emotional and is to be taken seriously. Mad deep requires even more seriousness and thought.
That conversation last night got mad deep fam
by Just a white kid July 23, 2017
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A statement meaning that you are going out with a large group of cool people and acting like ninjas.

Or whatever else you really want it to mean!
We're rollin' mad deep yo.

by Sierra Danger November 14, 2007
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