läpijalkoja
LÄPIJALKOJA is a Finnish term that literally translates to "through-legs." It describes a situation or a phenomenon where something is perceived as obvious, easily understood, or readily apparent, often to the point of being tedious or overexplained. The idiom suggests that the concept is so basic that one could easily "see through" it or grasp it with minimal effort, as if looking through one's own legs.
The phrase is typically used in informal contexts to express mild exasperation or impatience with something
The origin of the idiom is not definitively known, but its imagery is thought to relate to