I look through the 11th floor window
Take one last puff of the indo (WHAT?)
Look through the scope, and let like ten go
Break it down, back in the briefcase (uh-huh)

from DMX – The Professional Lyrics on Rap Genius

Meaning

X is looking down out of the building at his target, takes a last hit aims and shoots 10 rounds and takes the target out. dissasembles the gun into a briefcase.

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