Cheeky?

So, dad's friend from College, Mark, keeps laughing at my dad and telling him that I'm a very cheeky monkey. I have no idea what this means. All I know is that it makes dad cringe and shake his head, but Mark assures him that I'll rarely have to buy myself a drink in a bar. That's good, right? I mean, really, why should I have to buy my own juice or milk, isn't that what mom and dad are for? I'm down with others fetching my juice and food. Now, all this talk of drinking and eating his put a grumble in my tummy, so someone fetch me a snack!