Here’s a cleaner, more polished rewrite with better pacing and a little extra buildup, while keeping the jokes intact:
A brunette, a redhead, and a blonde were in the middle of robbing a supermarket late one night when a police officer suddenly walked through the front door.
Panicking, the three women scattered and dove behind the produce section, each scrambling into an empty potato sack lying on the floor.
The officer, suspicious, began checking the sacks one by one.
He kicked the first sack.
“Meow,” came a soft sound from inside.
The officer nodded. “Just a cat,” he muttered, moving on.
He kicked the second sack.
“Woof! Woof!”
“Oh,” the officer said, relieved. “Just a dog.”
Finally, he kicked the third sack.
From inside, a confident voice answered, “Potato.”
A blonde walks into an appliance store and approaches the man behind the counter.
“I’d like to buy that TV, please,” she says, pointing.
The cashier looks at her and replies flatly, “Sorry, we don’t serve blondes.”
Annoyed but determined, the blonde leaves.
The next day, she wakes up early, stuffs her hair under a hat and darkens it with charcoal, then returns to the store.
“I’d like that TV, please,” she says again.
The cashier barely looks up. “Sorry, we don’t serve blondes.”
Frustrated, she storms out.
The following day, she goes to a salon, gets her hair dyed bright red, and marches back into the store.
Once again, she points. “I want that TV.”
The cashier sighs. “Why do you keep coming back if you know we don’t serve blondes?”
Now furious, she snaps, “How the heck do you know I’m blonde?!”
The cashier looks her straight in the eye and replies calmly:
“Because that’s not a TV. That’s a microwave oven.” 😄