toimia kuin junan vessa

== Finnish == === Etymology === Literally, “to work like a train's toilet”; toilets in many old trains simply dumped the waste on the tracks. === Verb === toimia kuin junan vessa (informal) (idiomatic, simile) to work like a charm (to work well, efficiently and reliably) ==== Conjugation ==== See toimia; kuin junan vessa is not inflected.