alcoholic savant
A rare condition when a person suddenly gains brilliance or previously unknown areas of expertise with the introduction of massive amounts of alcohol to their bodies.
Billy: "Man, those guys were going to steal your car outside the bar, but you kicked all three of their asses! Do you know karate?"
John: "I don't know anything, but when I'm drinking I'm a black belt. I'm like an alcoholic savant with bourbon in me."
John: "I don't know anything, but when I'm drinking I'm a black belt. I'm like an alcoholic savant with bourbon in me."