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1 definition by Morbyd West

 
1.
Usually pronounced when mumbling. The description of weed when talking about it in public. can also be said while making a "2-puffs on the joint" gesture
Example 1:

The Boy: Yo dog, whats good?
The Man: Nothin. What you doin?
The Boy: Not shit.
The Man: You wanna go behind tha dumpster n smoka lil bitter dat sum sum?

Example 2:
Tina: Do you smell skunk?"
Ed: Skunk? You talkin as in the animal? Or you talkin bout you smell sum sum?
by Morbyd West July 07, 2010