Top Definition
The deep sound made when a whistle'r is put on a muffler.
From Bubb Rubb and lil sis "thats early in the mornin, its like an alarm clock, WOOP WOOOOP!
#noise #sounds #wooping #muffler noise #loud
by Spencers April 05, 2006
5 Words related to WOOP WOOOOP!
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