fool around

[fool around] or [mess around] or [play around] or [monkey around]{v.}, {informal} 1. To spend time playing, fooling, or joking insteadof being serious or working; waste time.

If you go to college, youmust work, not fool around.

The boys fooled around all afternoonin the park.

Compare: CUT UP(2). To treat or handle carelessly.

Bob cut himself by fooling around with a sharp knife.

Suzie saysshe wishes John would quit playing around with the girls and getmarried.

3. or [fiddle around] To work or do something in anirregular or unplanned way; tinker.

Jimmy likes to monkey aroundwith automobile engines.

Alice is fooling around with the piano inher spare time.