Two friends are hiking in the mountains when they stumble across a grizzly bear. The bear rears up on its hind legs and roars at them, displaying all of the signs of aggression. They both know they're in real trouble.
One of the men sits down calmly, takes off his hiking boots, and pulls a pair of running shoes out of his backpack.
"What are you doing?" screams his friend. "You can't outrun a bear!"
"I don't have to", he says while tying his shoes. "I just have to outrun you."