An exclamation sounded, triumphantly, when one produces both a fart and a burp either concurrently (a true kushtumpah, and worthy the name) or within a very short space of time (a weak, or 'feminine' kushtumpah). To qualify as a kushtumpah, both the burp and the fart must be done by ONE PARTY ONLY and must occur within no more than three seconds of one another.
by Barry Nomanstein November 25, 2013