Letterman and Lasko, whose son, Harry, was born in November 2003, didn't take an immediate honeymoon. The late-night host was back at work in New York on Monday to deliver the news — and a few jokes about the marriage.
"Regina and I began dating in February of 1986, and I said, `Well, things are going pretty good, let's just see what happens in about 10 years,"' Letterman, who turns 62 next month, said at the taping, according to a transcript.
After avoiding marriage for more than two decades, Letterman said, "I secretly felt that men who were married admired me ... like I was the last of the real gunslingers, you know what I'm saying?"
The road to the ceremony wasn't smooth, he told the audience. He, Lasko and their son were on their way to the courthouse Thursday when their pickup truck got stuck in the mud.
"So now we think, `Well, somebody'll come.' No, nobody comes along. Nobody comes along — it's Thursday afternoon; who's coming along? Zorro? No, nobody. So I get out of the truck and I walk 2 miles back to the house into a 50-mile-an-hour wind," Letterman said.
"It's not Beverly Hills, it's Montana, for God's sakes. And the whole way, I'm thinking, 'See, smart ass, see, see, you try to get married, this is what happens,"' he said.
When he returned, Letterman said, Harry asked if they were still going to town and was assured they were.
"And he gets very upset because mom had told him if I wasn't back in an hour, the deal was off," Letterman said.