Three women were about to be executed. One was a brunette, one a redhead, and the other a blonde.

The guard brought the first woman, the brunette, forward and the executioner asked if she had any last requests.
She said no, and the executioner shouted: "... Ready ... Aim ... !! and suddenly the brunette yelled, "EARTHQUAKE!".

Everyone was startled and looked around. She escaped.
So they brought up the redhead and asked if she had any last requests. She said no, and the executioner shouted: "... Ready ... Aim ...!! and suddenly the redhead yelled "TORNADO!"

Everyone was startled and looked around. She escaped.
By now, the blonde had it all figured out. They brought her forward and the executioner asked if she had any last requests. She said no and the executioner shouted: "... Ready ... Aim ... !! and the blonde yelled, "FIRE!"