Green’s Dictionary of Slang

all over adj.¹

dead.

1825		J. Neal Brother Jonathan II 59: Gag him! gag him! – It’s all over with us, if they get more head-way!
1834		Marryat Peter Simple (1911) 271: ‘Ah, Mr. Simple,’ said he, faintly, ‘is it you? It’s all over with me.’.
1877		‘Dicky Short’s History’ in Laughing Songster 57: He hung himself up to a tree in the meadow, / He felt all over he couldn’t tell how.