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A Mexican woodpecker and a Canadian woodpecker were in Mexico arguing about which place had the toughest trees. The Mexican woodpecker claimed Mexico had a tree that no woodpecker could peck.

The Canadian woodpecker accepted his challenge and promptly pecked a hole in the tree with no problem. The Mexican woodpecker was amazed.

The Canadian woodpecker then challenged the Mexican woodpecker to peck a tree in Canada that was absolutely 'impeckable' (a term frequently used by woodpeckers) . The Mexican woodpecker expressed confidence that he could do it and accepted the challenge.

The two flew to Canada where the Mexican woodpecker successfully pecked the so-called 'impeckable' tree almost without breaking a sweat.

Both woodpeckers were now terribly confused. How is it that the Canadian woodpecker was able to peck the Mexican tree, and the Mexican woodpecker was able to peck the Canadian tree? But neither was able to peck the tree in their own country?

After much woodpecker pondering, they both came to the same conclusion:

Apparently, your pecker gets harder when you're away from home.