quack stick Share definition Flag a quack stick is when something goes the wrong way, not as planned. Hey lets go to the mall! "okay" hey look were here, but theyre closed. "ahhhh pooie! well that was a quack stick!! quack stick by ╚>KoalaKween<╝ March 24, 2010 0 0 Get merch Get the quack stick mug. Buy Now — $32.95 See more merch