This question (deleted now so only users with the necessary privilege can see it) is obviously ridiculous, but it is pointed at me so I have trouble ignoring it. What is the right way to handle this?
In the case that it's a real question but directed at you: Edit your name out, leave a comment that you're not the only guy on SO.
In this case, the question is one that really should be a comment (and that's if we're being lax about comment rules). Conversations go to chat in a perfect world.
You should have flagged the question AND cast a close/delete vote (close in this case, since you're 7k)
Whenever a user gets too naggy/tangential/offtopic in the comments/questions, just ignore him/her. I find that the best course of action.