It's bad to drink before you legally can.
Mackenzie is a high school freshman at a house party with college kids.
Mackenzie wants to play beer pong.
Mackenzie plays beer pong using water instead of beer.
Mackenzie plays beer pong and downs a lot of beer by the end of the night.
Mackenzie is able to participate in party activities without drinking.
The cops show up to bust the party, and Mackenzie is booked for underage drinking.