Green’s Dictionary of Slang

(US) a general intensifier; a euph. for fucking adj.

1906		J.W. Carr ‘Words from Northwest Arkansas’ in DN III:ii 136: frazzlin’ thing, n. phr. Something, anything. ‘He won’t do a frazzlin’ thing.’.
1925		Odum & Johnson Negro and His Songs (1964) 182: I ain’t goin’ give you a frazzlin’ thing, you ain’t no girl o’ mine.
1948		Z.N. Hurston Seraph on the Suwanee (1995) 824: They wasn’t laying a frazzling egg.