gonk /gonk/ vt.,n. 1. To prevaricate or to embellish the truth beyond any reasonable recognition. In German the term is (mythically) `gonken'; in Spanish the verb becomes `gonkar'. "You're gonking me. That story you just told me is a bunch of gonk." In German, for example, "Du gonkst mir" (You're pulling my leg). See also gonkulator. 2. [British] To grab some sleep at an odd time; compare gronk out.