A man walks up to the counter and asks for a plate of potatoes.
The woman behind the counter says "Oh you must be from Ireland"
The man was furious "What sort of stereotypical remark is that? If I walked in here and asked for haggis would you assume I was Scottish?"
"Well no" says the woman
"And if I walked in here and asked for some chow mien would you assume I was Chinese?" asks the man
"No I suppose not" she replies
"Then how come you assume I'm Irish just because I come in here and ask for a plate of potatoes?"
The woman replies "Because this is a camera shop"