Counter them with:

"I guess even famous people have their off days!"

Or alternatively:

"I'll take that under advisement... along with my own thoughts."

BTW, I was fully with you until you got to the "two heads" quote. In my line of "work" two or even more heads are not only good, but necessary and very welcome (at least by me). But then again, my "work" doesn't feel like work because I love it.

Nice article, though.