An informal term of affirmation derived from the pronounciation of the German word "ja" and the common suffix of Asian forenames "deep", not to be used in the presence of racially sensitive individuals.
yargen blargen flargen is gibberishused just to fill some space. or it can be used in multiple kinds of spots.
mom: go do ur homework
me: yargen flargen blargen!
some assholish yardteacher: go put that away and line up!
me: yargen flargen blargen!
some assholish yard teacher: wat did u say?
me: go to hell bitch!
me walking down the street with some friends muttering yargen blargen flargen when i come near some random person.