1. Say “na zdorovie!” during a toast.
You want to impress your Russian friends and to propose a toast, and “na zdorovie” comes to your mind. But you will only get looks of slight exasperation and annoyance: Russians do not say that as a toast. In fact, in Russian language “na zdorovie” is close to “you are welcome”. Most Russians have no idea who started this whole thing with drinking “na zdorovie,” but it’s already a bit irritating.