"Old bear joke:
Two guys out hunting and one guy says, "What are you going to do if we see a
bear?"
Second guy says, "Run like heck".
First guy says, "But you can't outrun a bear".
Second guy says, "I know, I just have to outrun you".

....rest of joke:

"then, what's the gun for?"
In case I CAN'T outrun you, I'll shoot you."