The energy or aura emitted by an individual who simultaneously cares and doesn't care about the consequences of his actions or appearance. For example Marcellus Wallas from "Pulp Fiction"
Look at him and his "big nigga energy", pullin up to the club with two hoes and PJs n shit.
An evening in prison when large African American prisoners with oversized genitals take turns systematically anally raping lesser more vulnerable inmates.
“Hey Bill, remember to sleep on your back tonight, word on the block is that it’s Big NIgga Night.”