Some traditional dishes have names that lead those not in the know to try them and reject them because, based on the name, they expected something different. For example, any time there appears a thread about Cincinnati chile, some joker will post that he once tried it and it was terrible since it wasn't at all like chili. Well folks, Cincinnati chili is quite different from Texas (or "normal") chili, but that isn't a valid basis to say there's anything wrong with the one you tried.
Another example is New Orleans BBQ shrimp. There is very little if anything that BBQ shrimp has in common with what most people think of when they think BBQ (although I have stumbled across some ghastly versions where somebody actually dumped "BBQ sauce" on cooked shrimp and claimed it was BBQ shrimp -- blech!)
Are there any other examples you can think of where the name of the preparation connotes something unlike what the dish actually is?