The Parking Spot Escalation

The Parking Lot Escalation is the ninth episode of the sixth season of the CBS sitcom The Big Bang Theory.

Summary
After Howard gets himself a new car, a fight occurs between him and Sheldon after it is made clear that his parking spot at the university actually belongs to Sheldon, which eventually stirs hostility between Bernadette and Amy. Both parties revert to dastardly actions to get revenge.

Reference
Taping report by Kyzzx