What does Buffer Guest mean?

Buffer Guest meaning in Urban Dictionary

A buffer visitor is a detailed friend you ask to a party ten or a quarter-hour ahead of the other countries in the friends are scheduled to arrive. This guest or selection of guests is intended to 1) make it appear to be the celebration has begun and memories are to be had and 2) allow it to be less awkward in the event some one that you don't understand particularly really arrives before everybody else.