The context of the following conversation is Casey wanted to give her nieces a present, so she spent the day running around with them at the amusement park.:
Casey says I'm so worn out from the amusement park today..
The friend responds How many hours were you guys there?.
Casey responds In total, it was about eight hours..
The friend responds Wow, that's a full-time job right there..
Casey responds I know, one without pay though..
The friend responds Well, I am sure your nieces enjoyed them self..