The context of the following conversation is Casey begged her parents for one of the ice cream cones, but they told her she needed to finish her chicken dinner first.:
Casey says I want an ice cream cone now!.
The friend responds You can have one once you finish you dinner..
Casey responds That's not fair. I hate the taste of chicken..
The friend responds Well, just eat it. Once you do, you can have your treat..
Casey responds No fair!.
The friend responds Beggars can't be choosers girl!.