Fat Nuggets Share definition Flag The little piece of fat all girls have between the armpit and side boob.Best seen when wearing tight tank tops. Ashlyn: Ugh i hate my fat nuggets they are so ugly! Rachel:No they aren't! Everyone has them. Fat Nuggets by DameEllenTerry February 2, 2017 0 0 Get merch Get the Fat Nuggets mug. Buy Now — $32.95 See more merch