A redhead, a brunette, and a blonde are being chased by a serial killer, they run into a barn and hide in three sacks of potatoes. The killer walks up to the first bag and shakes it. "Meow meow" goes the brunette. "Just a dumb cat." The killer thinks out loud. He goes to the second bag and shakes it. "Arf arf" goes the redhead. "Just a dumb dog." Says the killer. He goes to the third bag and shakes it. "Potato potato!" Yells the blonde.