To chew the fat
Another unsubstantiated theory for the origin of the phrase suggests that it might come from the practice of chatting while chewing on the leftover fat and scraps after a meal. Another theory alludes to sailors chewing salted beef or pork fat on board the ship deck, whilst they complained about their troubles.
I am looking forward to chewing the fat with my old school friends at our reunion next month.
I sat in the pub with Jack all evening and chewed the fat.
Jimmy Kimmel is popular for chewing the fat with his guests on his television talk show. Just last week he spoke to the actress Sophie Turner from Game of Thrones!