Scrub Share definition Flag A scrub is a guy who thinks hes fine an is also known as a bustdown. Always talkin about wat he wants an sits on his broke ass. U a scrub, stop askin for my number u lame ! Scrub by Scrubaholic December 9, 2008 0 0 Get merch Get the Scrub mug. Buy Now — $32.95 See more merch