You shouldn't treat your friends like animals.
Joey is planning a big house party but is afraid her friend Becky will get too drunk and ruin the party.
Joey wants to make sure that Becky doesn't cause a scene at the party.
Joey pulls Becky aside before the party and asks her not to drink that night.
When Joey sees Becky getting drunk at the party, she locks Becky into the dog pen and refuses to let her out.
Becky listens to her friend's request and ends up meeting a nice woman at the party with whom she schedules a date.
Becky is embarrassed at being locked up in the pen and the people at the party make fun of her.