Good Information Sharing

A man named Jhuan comes up to the Mexican border on his bicycle with two large bags over his shoulders. The guard stops him and asks, "What's in the bags?"

"Sand," answers Jhuan to which the guard replies, "We'll just see about that..." The guard takes the bags, rips them apart, empties them out and finds nothing but sand. He detains Jhuan overnight and has the sand analyzed, but discovers that it really is nothing but pure sand.

Finally, the guard releases Jhuan, puts the sand into new bags, hefts them onto the man's shoulders and lets him cross the border.

A week later, the same thing happens--Jhuan approaches the border on his bicycle with two bags of sand. The guard asks him, "What have you got?" and Jhuan replies, "Sand." Again the guard does a thorough examination and discovers that the bags contain nothing but sand. He gives the sand back to Jhuan, who crosses the border.

This sequence is repeated every day for several months until finally the guard is sitting in a Cantina in Mexico and Jhuan walks in.

"Hey, Buddy," says the guard to Jhuan, "I know you're smuggling something.....It's been driving me crazy. It's all I think about! I can't sleep. Just between you and me, what are you smuggling?"