Hello Biko, It depends on the context: - If a girl tells her girlfriend to be aware that her spouse or boyfriend is fooling around,then it means he is cheating on her and being sexually unfaithful. But in the context of your posted dialogue it could mean: - being engaged in any playful activity that is marked by unrestrained youthful behavior whether going out for drinks ,picking up girls etc. It refers generally to making fun while acting foolishly, irresponsibly and wasting time without aim. - Doing things of little value or no importance like speaking humorously and telling jokes. - "He is not a professional ,but he was fooling around with her computer in hopes of fixing it" Here it means the person is working at random , acting silly and ineffectively. -When children fool around on the other hand they are just playing with toys for example.

It could be mean to play around in a silly or funny way.

in general "fool around" means to have fun. the word to focus on is "fool" like cracking a joke at someone then later tell "i was just fooling aound with you" in this example it means i was just having fun and not serious.

cherry was correct on everything she said, but she left out one meaning. to fool around can also mean to initiate sexual activities in a playful way. While "fooling around" almost always leads to sexual intercourse, the word itself refers to the initiation period, or foreplay, and specifically when it is done in a way that feels like sexual penetration isn't the main goal. It's playful and innocent.

Here it means that two friends just want to hang out and have fun.