You shouldn't lock people out of the house.
Lori has a friend sleeping over at her house and is having a good time with her while a winter storm rages outside.
Lori wants to play a joke on her friend.
Lori goes outside, sneaks in some snow, and throws some snow balls at her unsuspecting friend.
Lori lures her friend outside, shuts the door, locks it, and laughs at her through the window.
Lori's friend recovers, laughs, and grabs the snow, starting an in-house snowball fight.
Lori's friend starts to freeze and quickly gets frostbite, requiring medical attention to heal.