exorcising the brown daemons Share definition Flag A phrase used to elaborately describe taking a crap. "Sorry I'm late, I was just exorcising the brown daemons from my arse!" exorcising the brown daemons by Feltch McFlop March 27, 2009 0 0 Get merch Get the exorcising the brown daemons mug. Buy Now — $32.95 See more merch