Tom and Fred out Camping

Tom and Fred were out camping and had been snoozing peacefully for a few hours... Then in the darkness each awoke with a start. The unmistakable snuffling and scratching of a bear outside the tent brought them wide awake in an instant.

Fred, a bit a zoologist knew that bears were incredibly fast runners, and so was surprised to see Tom rapidly lacing up his boots.
"Tom, you know you can't out run a bear!"
"Forget the bear, Fred. I just need to out-run you!"