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."

A site foreman had ten very lazy men working for him...
A site foreman had ten very lazy men working for him, so one day he decided to trick them into doing some work for a change."I've got a really easy job today for the laziest one among you," he announced. "Will the laziest man please put his hand up."Nine hands went up."Why didn't you put your hand up?" he asked the tenth man."Too much trouble," came the reply.