This expression is casual, best used in relaxed or friendly environments.

Informal Usage

Be careful not to imply someone is wasting time, as the phrase can be seen neutrally or negatively based on context.

Not Wasting Time

Use it when activities lack a serious purpose or goal.

This can be a delicate topic, referring to secret or inappropriate relationships.

Can imply emotional, flirtatious behavior, not just physical acts.

Often implies non-committed, sometimes secretive relationships.

It often involves playful actions or jokes that are not meant to be taken seriously.

Acknowledge the appropriate time and place; fooling around isn't welcome in all settings.

Be careful as such behavior can sometimes be misinterpreted as disrespect or disinterest.