A 24-year-old Darwen man who mixed prescribed medication with drink was later seen talking to a parked car pretending to be King Kong.
Blackburn magistrates heard that Leon Paul Wilkinson also shouted at the top of his voice that he was King Kong before kicking the wing mirror off a car.
Wilkinson, of Holden Fold, Darwen, pleaded guilty to criminal damage.
He was remanded on bail until September 28 so details of a previous conditional discharge can be put before the court.
Catherine Allan, prosecuting, said the owner of the car had looked out to see Wilkinson having an "argument" with his car.
When interviewed Wilkinson said he had drunk a bottle of whisky after taking his drugs.
Jonathan Taylor, defending, said Wilkinson had taken anti-depressant tablets before drinking heavily and had no recollection of the incident.
"He doesn't know why he was talking to a car or why he was informing people that he was King Kong," said Mr Taylor.
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