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Alcohol-fueled nuptials in Las Vegas aren't typically known for their longevity, but comedienne Janeane Garofalo is bucking the trend, announcing she had been unknowingly, legally married for 20 years.

Speaking at a New York Comedy Festival reunion for "The Ben Stiller Show," the 48-year-old explained that she married writer Rob Cohen as a joke in Las Vegas in the 1990s, and didn't realize the marriage was official, the New York Post reports.

"Rob and I got married, for real, which we had to have a notary dissolve not 30 minutes before we got here tonight," Garofalo said. "We were married for 20 years until this evening," she told the audience.

Cohen later went on to produce hit sitcom "The Big Bang Theory."

"We got married drunk in Vegas. … We dated for a year, and we got married at a drive-through chapel in a cab. [We thought] you have to go down to the courthouse and sign papers and stuff, so who knew? We were married, and apparently now that [Rob] is getting married for real, his lawyer dug up something," Garofalo said.

The couple got a quick divorce Saturday in New York, with the split notarized at a midtown bank.