2 X 4's or 4 X 2's

Some men in a pickup¹ 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-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."