Some men in a pickup truck drove to a lumber yard.
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-four."
"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 gonna build a house..."