Mad Deep 

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

Mad Deep by Just a white kid July 23, 2017

mad deep 

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.

mad deep by Sierra Danger December 11, 2007

we roll mad deep 

an obese elephant eating raspberry jello while pondering the thought of a purple goose.

"Kayla, we roll mad deep yo."
"Yeah, thats what the lady told me at the zoo..."

we roll mad deep by Foldya Laundray May 25, 2008