Slap and tickle: What better way to signify such an expression than a still from a Carry On film. In Carry On Up The Khyber the use of 'tiffin' had the same meaning. Other expressions to slip in could be 'a bit of how's your father', 'nookie', 'hanky panky'. Ian Dury was more than fond of a euphemism. In the song This Is What We Find, Harold Hill comes home to find another gentleman's kippers in the grill and that's nothing compared to what Billericay Dickie gets up to with Nina in the back of his Cortina.