Apparently, I'm a BadAss
The head of my department, who I have mentioned numerous times, is a slimeball lacking social skills. He tries to find lame ways to include himself in conversation and doesn't know when to stop talking. There's a nice German expression for these people that just keep talking and talking about stupid mundane shit - "Dumschwetzer" (I hope I'm spelling it correctly). Literally, it translates as dumb-talker.
Anyway, this morning I am in the library talking to our associate (he's stuck with a cubicle there). I'm talking about how many of us were grandfathered into a securities rule. Our boss walks by and says to me "What did you say, that your a grandfather? You can't be a grandfather!!! Blah, blah, blah" And then proceeded to correct my usage of the word, without having heard the beginning of my comments, which would have made the context appropriate.
He kept talking, but I blocked him out. I had a newspaper on my lap, so I picked it up and started perusing. I didn't make eye contact with him or acknowledge his comments.... after another minute or so of blabbling, he finally left.
There was another Associate in the library during all of this. Afterwards, he came into my office and said "You are SO badass!". Granted, it wasn't the most polite thing to do, but there is no way to get this guy to SHUT-UP otherwise.