Honestly, you'd like to beat the other person over the head with your briefcase.
Possibly, you walk out with a sliver of dignity, promising yourself you will never put up with that sort of abuse again.
Actually, you force a smile, avoid eye contact and tell the client, through gritted teeth, that you look forward to getting their feedback.
Ideally, you detach for a moment, taking in the measure of the man, smile graciously, extending your hand and saying you'll be interested to see how things progress. You walk out feeling that you have demonstrated grace under pressure, maintaining your dignity and your status.
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