Clever clogs not a boring thing, we hear (4-3)
I believe the answer is:
know-all
'clever clogs' is the definition.
(I've seen this before)
'not a boring thing we hear' is the wordplay.
'not a' becomes 'know' (I am not sure about this - if you are sure you should believe this answer much more).
'boring thing' becomes 'awl' (tool for boring holes).
'we hear' shows a homophone (sound like).
'awl' sounds like 'all'.
'know'+'all'='KNOW-ALL'
Can you help me to learn more?
(Other definitions for know-all that I've seen before include "Wiseacre" , "One supposedly omniscient" , "Pretender to great learning" , "Smarty-pants" , "Person who thinks he has all the answers" .)