An individual who becomes overly talkative when drunk; term is used, however, for a much deeper defect of character whose symptoms are antisocial behavior and a tendency to blame others for things they didn't do. The term is to be used as a proper monicker as well as a generic. Example: A: Jim told me he didn't want to go to breakfast with us. But when we got back from Shoney's he asked us why we didn't take him to breakfast!. B: Ah, fergit it. That's just Circlemouth. A: He's a circlemouth all right.
CIRCLEMOUTH
Meaning of CIRCLEMOUTH in English
Slang English vocab. Английский сленговый словарь. 2012