Tennis Shoes
Two hunters are walking through a forest looking for deer. When all of a sudden, a giant bear jumps out and scares the shit out of them. They drop their guns and run like hell.
One of the hunters stopped, opened up his backpack and laced up a pair of tennis shoes. His buddy looked at him and said, "What are you doing? Are you crazy? You can't outrun the bear!"
To this the hunter said, "I know, all I have to do is outrun you!"