Not be serious, play with something
Meanings
- Not be serious, play with something (separable [optional], International English)
- Treat someone badly (separable [obligatory], International English)
- Have a sexual relationship outside marriage or a permanent relationship (intransitive, International English)
Examples
- I was MESSING AROUND on the internet because I couldn't be bothered to do any work.
- She is always MESSING me AROUND and never does what she promises.
- She's not faithful- she's been MESSING ABOUT since they got married.