An Australian woman named Angie Mcyen who underwent general anesthesia to have her tonsils removed claims she has completely lost her Australian accent, and now speaks with an Irish accent.
She met with doctors who told her she has "Foreign Accent Syndrome", which usually occurs in traumatic brain injury patients. Angie claims she has never been to Ireland, and she's not faking. Foreign Accent Syndrome has only about 100 documented cases since it's discovery in 1907