People in Ireland love to enjoy themselves, better known as "having the craic". If the "craic" is good enough it defies definition. Formerly "crack", until ambiguous meaning necessitated a change, "craic" is an Irish sounding pronunciation of an English word, the kind of thing linguistic purists hate. However, they don’t mind having craic. Craic is a good time, good company, good atmosphere and conversation. If you are enjoying yourself, it is good craic.