Brain or muscles?
The strong young man at the construction site was bragging that he could outdo anyone in a feat of strength. He made a special case of making fun of one of the older workmen. After several minutes, the older worker had had enough."Why don't you put your money where your mouth is," he said. "I will bet a week's wages that I can haul something in a wheelbarrow over to that outbuilding that you won't be able to wheel back.""You're on, old man," the braggart replied. "Let's see what you got."The old man reached out and grabbed the wheelbarrow by the handles. Then, nodding to the young man, he said, "All right. Get in."

At a jury trial with the jury consisting of 8 men and 4 women...
At a jury trial with the jury consisting of 8 men and 4 women:Defendant: "Your Honor, I wish to change my plea."Judge: "Is someone using undue influence to prompt you to change your mind?"Defendant: "No sir, when I pleaded Not Guilty I didn't know there would be women on the jury. Since I can't even fool my wife, I'll never be able to fool the four women jurors."