'Worst Thing I Ever Posted': The No. 1 celeb social media blunder

E! counted down the top 10 unfiltered, regretful and embarrassing celebrity social media moments on the special, "Worst Thing I Ever Posted."

So who topped that list? Geraldo Rivera, proving that bad judgement knows no age. Back in July, Rivera posted a near-naked selfie on Twitter.

Other contenders for most embarrassing celebrity moment were Kim Kardashian, Amanda Bynes and Justin Bieber ... but they all fell short of Rivera's nakedness.

Rivera's decision to tweet after drinking too much tequila had some repercussions.

The infamous selfie actually cost Rivera a speaking gig that year at Duquesne University.

"A spokesperson for the Pittsburgh school said the 70-year-old's photo was 'inappropriate and not in line with the school's values as a Catholic university.' Rivera called the cancellation 'pretentious censorship.'"

Fans on Twitter were loving the show, saying it was pretty hilarious and entertaining.