Oh, way too funny, and I can SO relate!
My favorite is when he asks a question to which I answer "I don't know". After which, he asks me a further question about what I just told him I didn't know anything about. I repeat, "I don't know". Then believe it or not, there comes a third question asking even further details about what I already told him "I don't know!!!"
What, does he think if he keeps asking, my answer will be any different??? Sometimes for kicks, if that second question is forthcoming, I'll make up a totally bizarre answer instead of saying "I don't know" again. Good grief, the ensuing questions after that kind of answer are absolutely mystifying, with my answers becoming more and more off the wall until he finally gets that "I DON'T KNOW" and am picking on him