Nice article found in pair of lines? Just kidding (8)
I believe the answer is:
raillery
'just kidding' is the definition.
'nice article found in pair of lines?' is the wordplay.
'nice article' becomes 'le' (definite article in French, so spoken in Nice).
'found in' is an insertion indicator.
'pair of' becomes 'rail' (I can't explain this - if you can you should believe this answer much more).
'lines?' becomes 'ry' (abbreviation for railway).
'rail'+'ry'='railry'
'le' put inside 'railry' is 'RAILLERY'.
(Other definitions for raillery that I've seen before include "Banter, back-chat" , "Good-humoured teasing" , "Satirical banter" , "Light teasing repartee" , "Badinage" .)