A term used by anti-New Orleans Saints fans (basically the rest of the NFL team's fans) in order to display their annoyance and hatred for the overkilled term "Who Dat?"
As the final seconds ticked off the clock, the Carolina Panthers fans chanted "Dump-dat" as the Saints fans poured out of the stadium admist another defeat by the hands of the Panthers.
by Timmymoto April 22, 2010

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