One of which is that social lies are anaethema, which I swear gets us into more trouble than the rest combined.

Yeah. That's the one that gets me into trouble. We were talking about that a little over at mrissa's place too. I have devised a whole art of how to get out of having to utter social lies when talking to normal people.

I'm not sure it's a fallacy, though (which of course I'd say, being a geek). There's something to be said for holding to a sharper degree of honesty.