Green’s Dictionary of Slang

ass-whipped adv.

[ass n. (2) + SE whipped]

(US) utterly, extremely, usu. describing exhaustion.

[US]L. Heinemann Close Quarters (1987) 329: Stoned or sober or ass-whipped tired, he knew the tracks and the killing and the staying alive.
[US]L. Heinemann Paco’s Story (1987) 120: He used to come home nights ass-whipped tired, just draggin’ his ass.