Blonde in the car park

I pulled into the crowded car park at the Local
Shopping Center and rolled down the car windows to make sure my
Golden Retriever pup had fresh air. She was stretched full-out on
the back seat and I wanted to impress upon her that she must remain
there.

I walked to the curb backward, pointing my finger at the car
and saying emphatically, 'Now you stay. Do you hear me?'

"Stay! Stay!"

The driver of a nearby car, a pretty blonde young lady,
gave me a strange look and said,

Why don't you just put it in "PARK" ?