Brownie Sewer Share definition Flag A fun and catchy word for anus. Can Be used in relation to anal sex. "Gary pulled a fast one and popped his Tuna Rod into Reta's Brownie Sewer" Brownie Sewer by TheJackoMeter March 7, 2009 0 0 Get merch Get the Brownie Sewer mug. Buy Now — $32.95 See more merch