Green’s Dictionary of Slang

1. (also gritts) anything seen as a necessity, e.g. money or sex.

1964		E. Wilson Earl Wilson’s New York 24: A Harlemite says to acquaintances he hasn’t seen in months, ‘Hi, man.’ ‘I can’t get to my grits,’ the friend grunts—meaning he’s desperate, in the final stages of poverty.
1974		D. Goines Daddy Cool (1997) 72: This was the grits. If he didn’t take care of business right, it would be all for nothing.
2000		Ebonics Primer at www.dolemite.com 🌐 gritts Definition: money, sex, or something needed (wanted) Example: Who got the gritts?

2. one’s business.

1979

E. Torres After Hours 56: Walberto got down to the main grits he brought for me.