Funny thing humour? How right you are. Most of my career has been in management in the logistics industry. Logistics being a swank term for transport. The movement, storage and distribution of goods.
When you are in charge of a few hundred hairy arsed truck drivers some of their more profane language can rub off. But I always made a point of never swearing when reprimanding anyone, or, when asking for something to be done.
There was one particular miscreant who could make a saint swear and on this day, he was at his surliest best. Rather than give in to bad language I told him to go and indulge in sex & travel. That went right over his head, so when I gave up and said it means off! He asked what that had to do with sex and travel? I did think of explaining the metaphor but he would have thought that a metaphor was a metal fork, Sometimes it's best just to walk away.