Scrawny McTwigerthin Share definition Flag One who is underweight or simply thin to a great degree. "Man, that Scrawny McTwigerthin looks like he hasn't eaten for days." Scrawny McTwigerthin by Fidoto May 24, 2005 0 0 Get merch Get the Scrawny McTwigerthin mug. Buy Now — $32.95 See more merch