clever Dick
noun(also clever clogs)
(both British English, informal, disapproving)a person who thinks they are always right or that they know everything 自以为总是对（或无所不知）的人；自以为是的人 I don’t claim to be an expert and I certainly don’t want to be a clever Dick. 我不自称是专家，当然也不想成为聪明的迪克。