When you talk to someone and they completely ignore you until after you try to get your point across. Usually happens between two co-workers when one does not pay attention to the other because they are in their own little world. They usually follow your last word with a quick and abrupt "huh" which at that point the initiator of the conversation has to tediously repeat himself. Sometimes this happens twice with the same main idea.
I was telling my co-worker of a funny incident that happened this past week and they just Vangi-Snoozed on me and paid me no mind.