When Little Man threatens to tell Mama about Cassie being nice to Lillian Jean, what is Stacey’s response?

From the text:

“Naw you ain’t,” said Stacey. There was a shocked silence as all heads turned to him. “This here thing’s between Cassie and Lillian Jean and ain’t nobody telling nobody nothin’ ’bout this.” He stared directly at T.J., caught his eye, and repeated, “Nobody.”