Confused Rick Perry forgets his own plan mid-sentence, can't name third agency

This has to be the bonehead moment of the day. From last night's GOP Presidential debate:

9:30: Quote of the night: “Oops.”

Rick Perry: “Commerce, education, and the umm, what’s the third one there? Let’s see… The third agency of government I would do away with – education, uh the, commerce, and let’s see, I can’t. The third one I can’t. Sorry. Oops.”

9:31: Fifteen minutes later, Rick Perry’s brain clicks in. “By the way, it was the Department of Energy that I was reaching for before,” he reveals.