"Can I take a picture?"
"No," said the old fish monger.
"But I've never seen a crab like this."
"What do you mean? You never seen a crab?"
"I've seen lots of crabs. But not like this."
"How can you not have seen a crab?"
"How do you cook them? Do you boil or steam them?"
"Yes, it's cooked through."
"But how do you cook them? Boiled or steamed?"
"I boil them!"
"Steamed crabs are better."
"Don't you tell me how to cook crabs! I've been cooking fish longer than you've been around.
"I've still never seen crabs like this. They're all big and round."
"You must be from the moon, then!" he harumphed. "But go ahead, take a picture."
[I'm in England. Regular blogging will resume in February.]