1st guy: "So there's a turtle trying to get across the free way... but the turtle has no legs. How does he get across?"
2nd guy: "I don't know."
1st guy: "Want a hint? Take the F out of Free and the F out of way. What do you get?"
2nd guy: After thinking for a moment. "umm, there is no F in way"
1st guy: "Exactly"