hanky-panky

Mischievous behaviour, dishonest or shady activity.

I think there was some hanky-panky with the last election.

Are you sickened by the idea of more and more CIA hankypanky in Central America?

Amorous behaviour, smooching, making out, necking, sex or other sexual activity, especially if illicit.

I don't wanna cry / I just wanna hanky panky / Nothing like a good spanky

You're my doll, rock and roll, feel the glamor in pink / Kiss me here, touch me there, hanky-panky

A debaucherous act; a sexual act that is considered inappropriate.