gonk /gonk/ , vi.,n. 1. [prob. back-formed from gonkulator. ] 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 mich (You're pulling my leg). See also gonkulator. 2. [British] To grab some sleep at an odd time; compare gronk out.