play around

play around (third-person singular simple present plays around, present participle playing around, simple past and past participle played around)

1. To behave in a silly, or childish, or irresponsible way.

   Stop playing around, and get on with your homework.

2. To work with in a non-serious manner

   You could build even more interesting components called amplifiers and begin playing around with amplifiers.

3. (idiomatic) To engage in sexual practices outside of marriage.

• fool around