I got crews on both sides together
Deeper than the ocean and down for whatever

from Dr. Dre (Ft. Group Therapy (B-Real, KRS-ONE, Nas & RBX) – East Coast/West Coast Killas Lyrics on Rap Genius

Meaning

He has friends on both coasts who are all down with each other. “Deeper than the ocean,” is a metaphor for how many friends he has. “Deep” is slang for “many.”

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