On Friday, Texas Gov Rick Perry had another campaign stumble when he said there were just eight Supreme Court justices, and referred to President Obama’s appointee Sonia Sotomayor as “Montemayor.” On Fox News Sunday this morning, Perry said he wasn’t a “robot” who had “memorized” the names of Supreme Court justices.

“Well, obviously I know there are nine Supreme Court justices. I don’t know how eight came out of my mouth,” Perry said. “I can’t tell you, I don’t have memorized all of the Supreme Court judges.”