Fish and Chips

"Have you got a fork?" asked the woman.
The man behind the counter arched an eyebrow.
"A fork?"
"Yes, a fork."
"What for?"
"I want to eat my fish and chips."
"Yes?"
"And I need a fork."
"Why?"
"Because I'm not going to eat them with my fingers, am I?"
"Why not?"
"Look, have you got a fork or not?"
There was a very obvious box full of plastic forks on the rear counter.
"I can see them there, just give me one of them."
"No can do."
"Why not?"
"They're five pounds each."
"Five pounds?"
"Actually, they've just gone up to ten."
The woman picked up the plastic vinegar bottle from the counter and squirted it in the man's eyes.