A blonde, a brunette, and a red head just robbed a bank.

They run into a barn to hide from the cops chasing them. Each of them jumps into an empty burlap sack when the cops come in.

The cops see the bags so they inspect them. The cops shakes the red head's bag. "Woof woof !" Says the red head. So the cops move on, thinking that it's just the farmer's dog.

The cops shake the brunette's bag. "Meow!" Says the brunette. So the cops move on.

The cops approach the third sack and shake the bag. The blonde yells "potatoes!"