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 little old lady goes to the doctor and...
A little old lady goes to the doctor and says, "Doctor I have this problem with gas, but it really doesnt bother me too much. They never smell and are always silent. As a matter of fact, Ive farted at least 20 times since Ive been here in your office. You didnt know I was farting because they didn't smell and are silent."

The doctor says, "I see. Take these pills and come back to see me next week."

The next week the lady goes back, "Doctor," she says, "I dont know what the heck you gave me, but now my farts...although still silent they stink terribly."

"Good", the doctor said, "Now that weve cleared up your sinuses, let's work on your hearing."