Green’s Dictionary of Slang

(US black) to be unfriendly; to argue loudly.

1935		(con. late 1920s) L. Hughes Little Ham III i : tiny (Coldly): Hello, Gilbert. gilbert: Don’t bass at me, woman. I ain’t bit you.
1977		E. Torres Q&A 33: The Comanches came in the poolroom on 106th Street, bassin’ at everybody.
1992		D. Burke Street Talk 2 47: Look at those two bassin’ again.