Two Woodpeckers

A Hawaiian Woodpecker and a Canadian woodpecker were arguing about which place had the toughest trees. The Hawaiian woodpecker said that they had a tree that no woodpecker could peck. The Canadian woodpecker challenged him and promptly pecked a hole in the tree with no problem. The Hawaiian woodpecker was in awe. The Canadian woodpecker then challenged the Hawaiian woodpecker to peck a Canadian tree that was absolutely unpeckable. The Hawaiian woodpecker expressed confidence that he could do it and accepted the challenge. After flying to Canada, the Hawaiian woodpecker successfully pecked the tree with no problem. The two woodpeckers were now confused. How is it that the Canadian woodpecker was able to peck the Hawaiian tree and the Hawaiian woodpecker was able to peck the Canadian tree when neither one was able to peck the tree in their own country? After much woodpeckering, they both came to the same conclusion: Your pecker is always harder when you're away from home.