You shouldn't let people eat out of your garbage cans.
Callie notices a homeless person digging a hamburger tossed out of her trashcan.
Callie wants the homeless person to have food.
Callie cooks dinner for herself and the homeless person.
Callie enters her apartment allowing the homeless person to continue digging through her trash.
The homeless person talks Callie into hiring her for doing odd jobs for her in exchange for food.
The homeless person gets sick from the germs in Callie's trash can.