A minister was making a wooden trellis to support a climbing vine. As he was pounding away, he noticed that a little boy was watching him. The youngster didn’t say a word, so the preacher kept on working, thinking the lad would leave. But he didn’t. Pleased at the thought that his work was being admired, the pastor said, “Well, son, trying to pick up some pointers on gardening?” “No,” replied the boy, “I’m just waiting to hear what a preacher says when he hits his thumb with a hammer.”
Baker Books, 1500 Illustrations for Biblical Preaching, by Michael P. Green