while employed by McDonald's, "nigger rich" is the state of fiscal being one attains shortly after receiving a paycheck.
suddenly, he is able to afford small amenities, which, due to the usual absence of all hedonistic pleasures from his Spartan lifestyle, makes him feel like he's a goddamn millionaire.
"let's go to 7-11."
"i can't man, i'm broke as shit."
"what do you want, tim? i'll pay for it."
"how can you afford that, ryan? we both work at mcdonald's."
"i just got my check, man. $500. i'm fucking nigger rich."