Read it through once

He was not a liar; but he will become one if he keeps on. He told me once that he used to crack cocoanuts with his teeth when he was a boy; and when I asked how he got them into his mouth, he said he was upward of six feet high at that time, and had an unusual mouth. And when I followed him up and asked him what had become of that other foot, he said a house fell on him and he was never able to get his stature back again. Swervings like these from the strict line of fact often beguile a truthful man on and on until he eventually becomes a liar.