person A: just got back from grocery shopping_comma_ The cashier gave me back $10 more change than I supposed to get
person B: Did you give it back or just walk away?
person A: i did not find out untill i got home_comma_ the store is kind of far and I think I'm going to keep it_comma_ but it's eating on my conscious because of that
person B: Yeah_comma_ that is a hard one to deal with.  Maybe you should give it back so you will not feel bad about yourself.