Sketchy Share definition Flag adj: jailbait accident waiting to happen. And by accident we mean piano-suspended-by-fishing-line style accident. "Dude, I swear she is 18!" "No man, she seems Sketchy" Sketchy by The Lawlrus March 31, 2009 0 0 Get merch Get the Sketchy mug. Buy Now — $32.95 See more merch