hanky-panky
noun /ˌhæŋki ˈpæŋki/
/ˌhæŋki ˈpæŋki/
[uncountable] (old-fashioned, informal, humorous)- sexual activity or slightly dishonest behaviour that is considered bad but not very seriously bad
- There was all sorts of hanky-panky going on at the party.
Word Originmid 19th cent.: perhaps an alteration of hokey-pokey.