1
general::
Activity for pure pleasure or diversion. For example, This job isn't all fun and games, you know, or We're just out for fun and games tonight. [Early 1900s]
American Heritage Idioms
2
general::
Phrase(s): fun and games
Fig. playing around; doing worthless things. • All right, Bill, the fun and games are over. It’s time to get down to work. • This isn’t a serious course. It’s nothing but fun and games.
McGrawhill's American Idioms And Phrasal Verbs