Was it a slip?

During a recent recording session for RFTB&D, while reading a Government text...

ME: "... a characteristic most noted since President George W. Bush has occupied the Evil Office. In the later part..."

DIRECTOR: "Uh, Bob. That should be Oval office."

ME: "What did I say?"

DIRECTOR: "You said 'Evil Office." It should be Oval office. We are not allowed to editorialize. I'll back up."

ME. "Please."