Friday the 13th: The Final Chapter (1984)

Drink every time:

• There is nudity or someone disrobes
• Any mask is shown
• There is a false scare
• Someone dies 
• Jason's hand is shown
• A record is played/Someone dances
• Glass is broken
• Someone goes through a window
• "Teddy" is said 

Finish your drink:

• Someone gets harpooned 
• Tommy needs Rogaine