The context of the following conversation is Casey got Jan's trash to throw away in order to help Jan out as a friend.:
Jan says Honestly, if you don't have a friend like Casey in your life, you need one..
The friend responds I know, she's always doing favours and never asking for anything in return..
Jan responds This time she came around and picked up all my trash for me..
The friend responds Yeah, you better buy her a drink or two..