cornado Share definition Flag The swirling display of corn-filled poop as it is flushed down the toilet. "When did we eat corn? I just took a massive dump, and you should have SEEN the cornado when I flushed!" cornado by RedSquirrelPssht April 2, 2009 0 0 Get merch Get the cornado mug. Buy Now — $32.95 See more merch