subs. (common).A man; fellow; cove; cuss; or chap; with a certain qualification, e.g., an ugly CUSTOMER = a dangerous opponent; a queer CUSTOMER = a suspicious person, one to be suspected; a rum CUSTOMER = an odd fish. For synonyms, see COVE.
1818. P. EGAN, Boxiana, I., 19. Here many an ugly CUSTOMER has met with his match, and been frightened in his turn.
1854. WHYTE-MELVILLE, General Bounce, ch. vi. Some of these good-looking young gentlemen are ugly CUSTOMERS enough when their blood is up.
1870. London Figaro, 8 Oct. Customers would then know the kind of CUSTOMERS of tradesmen with whom they had to deal.