I'm thinking of backing my car into a pedestrian in a parking lot.
Are you being serious? Why would you intentionally hit someone with your car in a parking lot?
Because I think it would be funny
Harming someone with your car is immoral. People are expected to treat others with respect and be responsible behind the wheel of a vehicle. Harming someone with a car on purpose is a crime and you will be severely punished.
That sounds lame and boring.
If you are looking for excitement there are much better things you could think of to do than to harm people with your car.