The process or event of acting like a nigger. Or in other words, being a jackass/complete moron.
Tyrone was being niggerdly when he used a rusty nail to eat his dinner.
Shaqueefa stole my bike, and I said, "You ho! Quit being niggerdly!"
The act of being stingy or cheap. Coined by WingsofRedemption
Your sister is being very niggerdly with her pussy.