Two Irish hunters got a pilot to fly them to Canada to hunt moose.

They bagged six. As they started loading the plane for the return trip, the pilot said the plane could take only four moose. The two lads  objected strongly. "Last year we shot six, and the pilot let us put them all on board; he had the same plane as yours."

Reluctantly, the pilot gave in and all six were loaded. However, even with full power, the little plane couldn't handle the load and went down.