Republican presidential candidate Rick Perry poked fun at his embarassing debate performance during a skit on David Letterman’s “Late Show.”

Perry, in a taping tonight, read the “the top ten” excuses on why he couldn’t remember the third federal agency he wanted to eliminate during an excruciating brain freeze at Wednesday’s debate in Michigan. It was the Department of Energy.

“You try concentrating with Mitt Romney smiling at you. That is one handsome dude!” Perry said.

He also deadpanned, “I thought the debate was tonight.”