the 3 S's and a haircut Share definition Flag shit, shower and shave (in that order) with a haircut following the shit. Johnny: You're looking good todayMartin: Thanks man did the 3 S's and a haircut by midday. the 3 S's and a haircut by Bob Martin's Martini March 5, 2013 0 0 Get merch Get the the 3 S's and a haircut mug. Buy Now — $32.95 See more merch