Shutty Share definition Flag means shut the f**k up. Yadimar uses it and is hilarious! she invented it! = Chris: Yadi ur a loser Yadi: Lmao u nerd yadi: Shutty! Shutty by ballinchris April 21, 2007 0 0 Get merch Get the Shutty mug. Buy Now — $32.95 See more merch