Hearing about a dinosaur alive in the rain forests of South America, a professor launches a scientific expedition. After several weeks he stumbles upon a little man wearing a loincloth, standing near a 300-foot-long dead dinosaur. 

The scientist can't believe his eyes. "Did you kill this dinosaur?" he asks.

"Yep," replies the rain-forest native. 

"But it's so big and you're so small! How did you kill it?" 

"With my club," the primitive fellow answered. 

"How big is your club?" 

"Well, there are about 100 of us."