Some men in a pickup truck drove to a lumberyard. One of the men walked into the office and said, "We need some four-by-twos."
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 shortly and said, "Yeah, I meant two-by-fours."
"All right. How long do you need them?"
The customer paused for a moment and said, "I'd better go check."
After a while he returned to the office and said, "A long time. We're going to build a house."