"Can I have some Irish sausages please?" Asked Tommy.  "I want to make a proper Irish hot-dog."

The shop assistant looked at him and enquired, 'Are you Irish?'

'If I asked you for Italian sausage, would you ask me if I was Italian? Or, if I asked for German bratwurst, would you ask me if I was German? Or if I asked you for a Kosher hot dog, would you ask me if I was Jewish? Or, if I asked you for a Taco, would you ask me if I was Mexican? Would you, eh? Would you?'

The assistant replied, 'Well...er.... no' .

'And if I asked you for some Bourbon whiskey, would you ask me if I was American? What about Danish bacon, would you ask me if I was Danish?'

'Well, I probably wouldn't,' came the response.

Self-righteously, Tommy demanded, 'Well, all right then, why did you ask me if I'm Irish, just because I asked for Irish Sausages?'

'Because this is a shoe shop', replied the assistant