Playful exchange of teasing remarks (6)
I believe the answer is:
banter
'playful exchange of teasing remarks' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for banter that I've seen before include "Joke in a good-humoured way" , "Playful exchanges" , "Light-hearted raillery" , "Playful exchange of teasing remarks" , "Tease in good-humoured way" .)