You should not trust strangers with your children.
Jane's children keep nagging her and grabbing things off the shelves in the supermarket.
Jane wants someone to watch her children while she shops.
Jane calls her best friend, who just got off work at the McDonald's next door, and asks her to watch the children while Jane shops.
Jane asks a strange man hanging around the front of the store to watch her children.
The friend watches the children play outside the store while Jane efficiently finishes her shopping.
The man gets frustrated with the children's whining and hits one of them, causing bystanders to call the police on both him and Jane.