A noise uttered from a foul, disgusting, overweight person. It may come in the form of a sigh, hiccup, groan, yawn or even as a part of speech. Spelling may differ based on the length of the groargh. It may be lengthened to include more o's, a's and r's. A long groargh represents a stomach-turning noise that is extremely disturbing to all who hear it.
Office worker 1: "What was that?"
Office worker 2: "That was our disgusting coworker Alex. That was one of his groarghs."
Office worker 2: "Foul."