hankey-pank

CIDE DICTIONARY

hankey-pank, n. [Cf. Hocus-pocus.].

Professional cant; the chatter of conjurers to divert attention from their tricks; hence, jugglery. [1913 Webster]
Illegal or unethical behavior, usually surreptitious; as, the boss got suspicious when profits seemed lower than expected, and hired an investigator to see if any hankey-pankey was going on. [PJC]
Extramarital sexual relations, especially adultery. [PJC]

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