brown eye Share definition Flag slang for the butt hole or anus. When the brown eye winks, the whole room stinks. brown eye by ILoveThom'sChickenDance November 20, 2003 Words you can keep railfan mug chonk mug chud mug based mug 67 mug slime mug mogging mug chopped mug thot mug glazing mug huzz mug yams mug larp mug unc mug cracked mug simp mug baddie mug bop mug lolcow mug