I once interviewed a candidate for an engineering position in Seattle. It quickly turned out that he had fabricated his entire resume, including the work history and education[1]. My first clue was that he claimed two years of work experience at Costco HQ in Issaquah, Washington but he pronounced it as "Is-ACK" (the local pronounciation is "IS-uh-kwah"). No one who spent two years in Issaquah would ever pronounce it that way, regardless of the accent you're coming from. His story just got weirder from there.

[1]: To this day I'm not sure why -- he actually performed quite well on the tech part of the interview and might have gotten an offer if he hadn't turned out to be a serial liar!