An Alaskan woodpecker and a Texas woodpecker were in Alaska 
arguing about which state had the toughest trees to peck. 
The Alaskan woodpecker said that they had a tree that no 
woodpecker can peck. The Texas woodpecker challenged him 
and was able to peck a hole in the tree with no problem. 

The Alaskan woodpecker was in awe. 

The Texas woodpecker challenged the Alaskan woodpecker to 
peck a tree in Texas that no woodpecker had been able to 
peck successfully. 
The Alaskan woodpecker expressed much confidence that he 
could do it. After flying to Texas and successfully pecking 
the tree in Texas, the two woodpeckers couldn't 
figure out why the Texas woodpecker was able to peck the          Alaskan 
tree and the Alaskan woodpecker was able to peck 
the Texan tree when neither one was able to peck the tree in his own state. 

After thinking for some time they both came to the same 
conclusion. Your pecker is always harder when you're away from home.