Swamp Funk Share definition Flag A deranged state of mind. Used to describe a person who is crazy off the wall nuts. Man, he's got some swamp funk upstairs.You got dat swamp funk, homie. Swamp Funk by Curly_Fry July 7, 2010 0 0 Get merch Get the Swamp Funk mug. Buy Now — $32.95 See more merch