After a meeting starts, I hear you make notes. Funny! (7)
I believe the answer is:
amusing
'funny' is the definition.
(I've seen this before)
'after a meeting starts i hear you make notes' is the wordplay.
'starts' indicates taking the first letters.
'i hear' shows a homophone (sound like).
'make notes' becomes 'sing' (I've seen this in other clues).
The initial letters of 'after meeting' is 'am'.
'you' sounds like 'u'.
'am'+'u'+'sing'='AMUSING'
(Other definitions for amusing that I've seen before include "Pleasantly entertaining" , "Comical" , "Killing" , "Causing a smile" , "Droll" .)