"High Speed Chase" joke

A blonde, a brunette, and a redhead are all in a red ferari speeding down a country road being chased by a squad car.
They try to lose him by darting into a forest behind a farm.
The trio ditch the car and decide to each hide in three burlap sacs on the ground.
The cop who was really close on their tail went up to each sac.
The cop kicked the first sac and the brunette inside said;
"Woof woof"
"Oh it's just a dog."
Then he kicked the second sac,
Inside that sack the redhead said;
"Meow Meow"
"Oh, it's just a kitten.
Then the cop went up to the third sac with the blonde inside and kicked it
The blonde said
"Potato potato"