The question is, how to handle someone who won't take no (10 times) for an answer, and continues trying to distract, waste time, and hijack?

We are in week 4 of the semester (hard to believe). It's going well -- my reduced schedule is much better. Toleration is majority freshman for the first time in years (and that's great). Two days ago was my birthday, and I turned 55. State retirement age! But of course I'm not retiring. I did something kind of radical and anti-social -- took my birth date off social media, and so did not get 200 Happy Birthday posts this year. I decided to do it not because of anyone on Facebook, but because I was in a crummy mood over village-related issues and I just didn't feel up to clicking all those "Likes" (LOL). It was a good day though. Ate dinner here, which was fabulous, and that's an understatement.