There are many idioms in English related to animals. To “horse around” means to play, act silly, and “goof off,” usually when you are really supposed to be doing something serious. When someone is playing at their job, sometimes we say: “Quit horsing around!”
Our English-as-a-Second-Language School in Duluth. Georgia, encourages students to study hard and play hard! So, at CCB School, you can horse around a little bit, but make sure to do your homework!