How To Catch Wild Pigs

There was a Chemistry professor in a large college that had some Exchange students in the class.
One day while the class was in the lab the Prof noticed one young man (exchange student)who kept rubbing his back and stretching as if his back hurt.

The professor asked the young man what was the matter. The student told him he had a bullet lodged in his back. He had been shot while fighting communists in his native country who were trying to overthrow his country's government and install a new communist government.

In the midst of his story, he looked at the professor and asked a strange question. He asked, 'Do you know how to catch wild pigs?'

Read the rest, and consider yourself warned.