- Mild
- When Lorraine and Marty are in the car, Lorraine drinks Alcohol at the age of 17. Marty tells her stop and then takes a sip. He spits it out when Lorraine starts to smoke a cigarette.
- Mild Alcohol and reference, and a couple of smoking scenes.
- The mother is originally shown as an alcoholic, drinking vodka around the dinner table with her family. It's very brief.
- At age 17, Lorraine drinks alcohol and starts to smoke a cigarette, but she is stopped on both occasions by Marty. He takes a sip of the alcohol but then spits it out.
- The members of the band playing at the dance are seen smoking outside of the high school and are called "reefer addicts" by another character.