banter
(1) Real: To converse and have small chats
(2)Slang: To say something unpleasant, but not mean it in a hurtful way
(1) "Are you drunk sir?"
"Are unicorns pink?"
"Hmm... yes"
"Good banter miss"

(2) "your a bitch Hayley"
"What? :("
"Chill out, its only banter"