Craic

 Craic (/kræk/ KRAK) or crack is a term for news, gossip, fun, entertainment, and enjoyable conversation, particularly prominent in Ireland. It is often used with the definite article – the craic – as in the expression "What's the craic?" (meaning "How are you?" or "What's happening?"). The word has an unusual history; the Scots and English crack was borrowed into Irish as craic in the mid-20th century and the Irish spelling was then reborrowed into English. Under either spelling, the term has attracted popularity and significance in Ireland. 

The word crack is derived from the Middle English crak, meaning "loud conversation, bragging talk".