Saying he was “glad to be out of the house” a retired and now bearded David Letterman was a surprise guest at a Steve Martin and Martin Short show at San Antonio’s Majestic Theater Friday night, saying Donald Trumps’s entry in the 2016 Presidential race made him realize he retired too early.

“I was complacent, I was satisfied, I was content, and then a couple of days ago Donald Trump said he was running for president,” Letterman said, pausing a beat to add. “I have made the biggest mistake of my life, I tell you.”

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Letterman then proceeded to tick off one of his famous Top 10 lists, listing ten “interesting” facts about the bombastic businesman.

A selection includes, “That thing on his head was the gopher in Caddyshack,” and “Donald Trump weighs 240 pounds, 250 with cologne.”

Number one on the list?

“Thanks to Donald Trump, the Republican mascot now is also an ass.

Watch the video below, uploaded to YouTube by Jeanie Engler:

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H/T Rolling Stone