fuck nugget is when your friend gives you a chicken nugget and your vibrator is out of batteries so you decide you get that lumpy shit inside of you.
Maria: "Yooo, my vibrator is dead what I do?"
Addy: "you remember that chicken nugget I gave you earlier? You still got that nasty shit right?"
Maria: "Yea I guess ill just have to fuck nugget that tonight."
is used as an insult, someone who could only be lucky enough to fuck a nugget, often disliked by the population of the world, usually a male but can be used by a female to describe a male (but go right ahead and use it on a female it's 2018, go equality) this person if highly in the wrong and should be punished somehow for being such a fuck nugget. don't be friends with a fuck nugget they're rude assholes
person 1: i can't believe you've one this.
person 2: you absolute hoe, go back to the trash.
person 1: you're such a fuck nugget, piss off bro