Sonad Share definition Flag To suck on a dick. Derives from the term "S on a D". Used as a phrase, instead of saying suck it, stfu, or stop. Dude, sonad. Did you really just do that? Sonad. Shut up....sonad. Sonad by Jritt February 11, 2010 0 0 Get merch Get the Sonad mug. Buy Now — $32.95 See more merch