We're back to the car, and Lorraine plants one on Marty. Needless to say Marty is not into it.
Once again, here's Biff to rescue someone from an uncomfortable situation. What a sweet, thoughtful guy.
He grabs Marty out of the car and vows to make him regret the $300 worth of damage to his car from the manure incident. Then, after passing him off to his goons, he hops into the driver's seat and starts to take advantage of a scantily dressed Lorraine.