agga lagga Share definition Flag A phrase expressing that one does not care about any persons involved in a situation but still finds it funny. Person 1: Oh no! I fell in poo! Person 2: agga lagga, idiot. agga lagga by C.J. Poppe August 1, 2007 0 0 Get merch Get the agga lagga mug. Buy Now — $32.95 See more merch