On the contrary, a person who is generally low-key at home or at work but suddenly begins to act like a tyrant once he is in a position of a customer while sightseeing or shopping may be called 'Soto-Benkei' (Benkei when outside).
また、普段、自分の家や勤務先では大人しいが、旅行先、買物先などで自分が客の立場になると急に威張りだすような場合を「外弁慶」と呼ぶ。