Hanky-pank

He was interested at once, and also at once made proclamation that all such performances were "hanky-pank," and that he could duplicate any of them.

Source: wiktionary

In specific explanation of Kaplan's wire of 10:30, Long testified that Kaplan returned his call shortly before 10:30 and that, after reviewing the developments beginning with Babcock's wire to Kaplan the previous afternoon, he and Kaplan concluded that there was some “hanky-pank going on” looking toward “instigat[ion of] a suit,” and that because of these “fears, ' Attorney Kaplan, without either of them knowing that Babcock had canceled Robertson's contract, sent Babcock the previously quoted wire concerning the Union's purpose in picketing.

Source: wiktionary

Defendant attempted through cross-examination of Rossman and prosecutrix to discover the activities in the Rossman vehicle prior to prosecutrix leaving that vehicle. Defendant was not permitted to ask Rossman whether any “hanky-pank” had gone on in the Rossman vehicle.

Source: wiktionary

After two years of hanky pank she got the mumps.

Source: wiktionary