/gäŋk/
vt.,n. 1. To prevaricate or to embellish the truth beyond any reasonable recognition. It is alleged that 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.