We will not flatter national pride and claim that Russian sayings are unique. Strange and absurd idioms exist, perhaps, in any language of the world. That's only when you know them from childhood, the direct meaning is forgotten and erased. And if a foreigner hears an expression like "jump out of your pants", he will immediately imagine this picture. If he is also an artist with a good imagination, he will prepare illustrations, as did the Canadian Nathan James.