"Why do we say that?"

"I was thinking of that expression, 'a ball park'," Sean says. "When we say, 'give me a ball park figure' why do we say that?"

"It's got to do with pens," Janet says.

"I'm trying to work that out," Sean says. "A ball park pen? so I say, 'Give me the price of that! Give me a ball park!' Where does the biro come in. That's the answer we've got. I don't know what she's on about. I think she needs a glass of wine."

With music from The Bay City Rollers, Buddy Holly, Tom Jones, and more.