Neffy-poo Share definition Flag A fat boy gifted with exceptional abilities, dexterity, and creativity to do shit. Aunt Marge : "Is that my Dudders? Is that my little neffy-poo?" (Harry Potter and the Prisoner of Azkaban) Neffy-poo by Neffy-poo January 22, 2022 0 0 Get merch Get the Neffy-poo mug. Buy Now — $32.95 See more merch