"hanky-pankies Aren't they small packs of tissues?"

han[ky-pan[ky 7ha%4kc pa%4kc8
n.
5altered ? after (SLEIGHT OF) HAND < HOCUS-POCUS6 [Colloq.] trickery or deception, orig. as used in tricks of illusion or sleight of hand, now esp. in connection with shady dealings or illicit sexual activity