He says "Bring me any football, and I shall tell you where it's from."
A man fetches a football over and Dave shakes it next to his ear.
Dave says "It's from Newcastle, I can hear the Magpies."
The man is shocked, but applauds him. Another man tries it, fetches a football, and again, blind Dave shakes it to his ear.
"It's from Norwich, I can hear the canaries."
Again Dave is correct.
A 3rd man fetches a 3rd football, and blind Dave shakes it next to his ear.
He says "It's from Coventry"
The other man says "Can you hear the City roar?"
Blind Dave says "No.
Spoiler:
