What is bungkaka meaning?

Bungkaka is defined as something or someone is useless, incompetent, foolish, stupid, etc. It might even refer to something unpleasing to see/hear/etc or something/someone that has no meaning at all in a particular set of situations.

Some of synonyms words might be 'dungu', 'bodoh', 'tolol', 'goblok', 'bebal', 'tebel', 'cupu'(cupu=kurang pengetahuan umum), idiot (in English)