Could be used in place of almost anyword, generally a person's name. Can also be substituded by the phrase "bing-bong" as per Mike Ditka. Can also be used as a blanket term for those of Asian descent. Byumsum is often an endearing term, used as a nickname among friends. For more information, see Will Ferrell.
by whitewaterbing May 21, 2011
Get the Byumsummug.