From Longman Dictionary of Contemporary Englishclever clogs/dickclever clogs/dickINTELLIGENT British English spoken used to describe someone who is annoying because they are always right or always think they are right → clever
Examples from the Corpus
clever clogs/dick• I don't claim to be an expert and I certainly don't consider myself a clever clogs.• Next time just stay at home and switch on the telly, clever clogs. 