It's good to make newcomers feel welcome.
Stan is holding a party and someone he's never met before came to it.
Stan wants to make the situation less awkward.
Stan starts up a conversation with the stranger and introduces them to others.
Stan asks the stranger what they're doing in his house and tells them to go home.
The stranger feels like they belong, and they feel less nervous.
The person who went to the party has hurt feelings and feels embarrassed in front of everyone.