Sophie & Sylv - Adorable Babes

Following up on your Scream of the Shalka quotes, I've always been uncertain about the passage that recounts the dinner party during which the Master's face falls off into the soup, and the other guests laugh. The Doctor is angry. But who/what exactly is he angry about? I'd like to think he's defensive of his now-dependent friend, but am I just reading it with biased glasses on?

I’d like to think that that was the case but I never considered it from that angle because the guests don’t actually laugh:

It seems unlikely that the Doctor would be annoyed by them for that — I’m fairly certain that his irritation was directed at the Master. The identities of the dinner party guests aren’t specified, but given the Doctor’s reaction (patrician chuckles), I’m inclined to think that they weren’t friends or close acquaintances — they were people who he wanted to make a very good impression on and it was, for whatever reason (though I doubt it was purely personal), vitally important to be successful in that regard.

Or maybe he was just irritated because he had to do all the cooking himself.