Green’s Dictionary of Slang

disgraced, socially or professionally embarrassed.

1860		Hotten Dict. of Modern Sl. etc. (2nd edn) 119: Comb-cut mortified, disgraced, ‘down on one’s luck’.
1873		Sl. Dict.
1909		J. Ware Passing Eng. of the Victorian Era 86/2: Comb-cut (Sporting). Trimmed, manipulated; applied to a man who has been completely vanquished. From the comb of fighting cocks being removed to prevent the opponent from seizing it; may be suggested by the vanquished bird having had his comb torn across by the victor.