expression
it's not my fault; the red face is the alcohol's fault
Proverb used humorously to excuse one's own drunken behavior or blushing by blaming the alcohol. Literally means 'the red (face) is the fault of the sake'.
顔が真っ赤だね。「赤きは酒の咎」ってやつさ。
Your face is bright red. Well, as they say, 'the red face is the alcohol's fault.'
A set phrase of uncertain origin, likely a playful saying that personifies alcohol as the culprit for one's flushed face or misbehavior.