Fanny breath Share definition Flag When a guys kisses you after licking someone's minge and his breath stinks of fish Louise: 'The guy has serious fanny breath, the only way to describe it is like it was like he'd just licked someones fanny' Zoe: Aww man thats nasty! Fanny breath by Zoe_1985 October 25, 2008 Get the Fanny breath mug.