So, hivemind: what's that term for the thing you do in a debate, where you come up with some egregious thing that's supposed to prove your point, rather than actually, you know, PROVING YOUR POINT. You know, like: "And besides, Stoppard was a good friend of mine, so clearly I must be right in my interpretation of his play!" Or maybe: "What's more, I have a hole in my heart, so I would never ever have dreamed of following Atkins, however desperate I got!" Or: "I have an English degree, so I certainly had no problem understanding the book."
I know there's a term for this dick-measuring point-scoring crap, but I can't think what it's called. Anyone?
I'm pretty sure all three of those examples you've listed above are argumentum ad verecundiam -- argument from authority.
With a little bit of straw man thrown in in each case, for flavor, presumably.