Fit For A Straitjacket Share definition Flag A looney person, an invalid. (Person) ate his own shit. Therefore, he is fit for a straitjacket. Fit For A Straitjacket by Beauxgrass September 19, 2009 0 0 Get merch Get the Fit For A Straitjacket mug. Buy Now — $32.95 See more merch