gunnybagger Share definition Flag CB slanguage insult or term of comeraderie derived from a slaveholder slang term meaning slave. See also cottonpicker. 1. Hey gunnybagger, you're nothin' but a cottonpicker! 2. Hey gunnybagger, how ya doin'? gunnybagger by Downstrike May 29, 2004 0 0 Get merch Get the gunnybagger mug. Buy Now — $32.95 See more merch