(CNN) -- There's a simple explanation behind the nearly nude self-portrait Geraldo Rivera shared with the world over the weekend, and it isn't vanity.
No, the TV personality has admitted that he's a survivor of tequila regret - a.k.a., the morning after realization that you should by no means operate digital devices while under its influence.
As Rivera explained to New York radio station 95.5 FM, he indulged in a "couple of drinks" after wrapping up work on Saturday night. He was "wired," and everyone else was asleep, so he apparently opted to celebrate National Tequila Day early.
"And I never do tequila when I'm alone, but I had this new bottle that someone had given me," Rivera said. "The second one, my fate was sealed."
And "at 2:30 in the morning, you're not thinking exactly logically" anyway, Rivera said with a laugh.
He'd actually taken the picture, which shows Rivera wearing nothing but a loosely draped towel and a pair of glasses, on Saturday morning. Later that night, sharing the snapshot on Twitter with the caption, "70 is the new 50," didn't seem like such a bad idea.
"I said, 'Dammit, I like that picture.' I had learned how to use Twitter a couple of weeks ago," he said, "and there I was."
In the morning, it was his 18-year-old daughter who first asked him to immediately take down the photo.
"It seemed like a great idea at the time," he said. "I figured they'd cut me some slack because I am so old. ... I took it down the next day after I heard from Fox."
Rivera seems to have learned a lesson, as he tweeted on Sunday: "Note to self: no tweeting after 1am."