As others said, it simply means to be outside of the house and exploring or completing activities. Here are a few more examples for you! 1. What are you doing today? I will be out and about getting supplies for the party. 2. He's out and about somewhere in the garden. 3. They have been out and about all afternoon.

It means that a person is out of the house doing things. You/they could be out doing a number of mundane things such as shopping, meeting friends, walking, working etc. You/they are said to be out and about. Can also apply to animals: I don't know where my cat is, she is out and about somewhere.

Simply hang out. However, there are few meanings to it. It depends on how you are using it. 1. To go from place to place in some area, doing something openly and habitually: All summer, the bees go about the garden collecting pollen. 2. To execute some routine: From my office on the top floor, I could observe all the city's workers going about their business. 3. To walk around or appear in public, especially in a particular state of dress: I don't know why you always go about in that silly hat. 4. To undertake something in a particular way: How does one go about finding an apartment? Your application could take weeks if you don't go about it in the right way.

Kind of walking around outside seeing lots of different things. What did you do today? I've just been out and about...