[AlwaysRock]

Not necessarily...

"What will ya have?" "Yeah give me a half pound of the turkey that's on special."

Perfectly appropriate conversation. It's a transactional conversation. Pleasantry are nice but the absence of them doesn't mean one is being rude.

[_Wintermute]

Subtle cultural differences, but that would still sound rude to me.

[Cthulhu_]

Well the question was asked quite bluntly (I'm not going to call it rude, more err, direct, colloquial?)