The clerk asked, "You mean two-by-fours, don't you?"
The man said, "I'll go check," and went back to the truck. He returned and said, "Yeah, I meant two-by-four."
"All right. How long do you need them?"
The customer paused for a minute and said, "I'd better go check." After a while, the customer returned to the office and said, "A long time. We're gonna build a house."