Hanky panky

British Slang

Definition

Playful or illicit sexual activity; also suspicious or underhanded behavior.

Examples

"The landlady frowned and said there’d be no hanky panky in the spare room, thank you very much."

"The auditors are sniffing around; any financial hanky panky will land them in hot water."

"He thought he was being subtle, but the whole pub clocked the hanky panky going on by the jukebox."