土頭土腦 tǔ tóu tǔ nǎo

DEFINITIONS

  1. rustic
  2. uncouth
  3. unsophisticated

CHARACTERS

土 tǔ soil, earth; items made of earth
頭 tóu head; top; chief, first; boss
土 tǔ soil, earth; items made of earth
腦 nǎo brain