Two woodpeckers

A Hawaiian woodpecker and a Californian woodpecker, who had managed to fly across the ocean to Hawaii, were arguing about which place had the toughest trees. The Hawaiian woodpecker led him to a tree that no woodpecker could peck! The Californian woodpecker challenged him and promptly pecked a hole in the tree with no problem. The Hawaiian woodpecker was in awe. The Californian woodpecker then challenged the Hawaiian woodpecker to peck a tree in California that was absolutely un-peckable. The Hawaiian woodpecker expressed confidence that he could do it and accepted the challenge. So after flying to California, the Hawaiian woodpecker successfully pecked the tree with no problem. The two woodpeckers were now confused. How is it that the California woodpecker was able to peck the Hawaiian tree and the Hawaiian woodpecker was able to peck the California tree when neither one was able to peck the tree in their own state? After much woodpecker-pondering, they both came to the same conclusion: Your pecker is always harder when you're away from home.