HAVE IT OFF WITH SOMEONE

He's been having it off with the typist in the conference hall — Он трахал свою машинистку в конференц-зале They were having it off long before they were married — Они спали еще задолго до женитьбы People are whispering that he has been having it off with his mother-in-law — Люди говорят, что он жил со своей тещей How does he know she's not having it off whenever his back is turned? — Откуда он знает, что жена не изменяет ему в его отсутствие?