Ruth Bader Ginsburg admitted Thursday that she had been drinking prior to the State of the Union address. 

The Supreme Court Justice was caught nodding off during President Obama's State of the Union address last month, according to MSNBC. She explained Thursday during a panel discussion at George Washington University that she was not completely sober for the speech.

"The audience for the most part is awake because they're bobbing up and down all the time," Ginsburg said. "And we sit there, stone-faced, sober judges. But we're not, at least I was not, 100 percent sober."

The 81-year-old said she had a California wine at a pre-speech dinner the justices attended, the New York Daily News reported. She seemed to suggest that this was not her first time attending the State of the Union address after drinking. 

Fellow Supreme Court Justices Stephen Breyer and Anthony Kennedy did their best to keep Ginsburg awake, MSNBC said. They continuously nudged and elbowed Ginsburg to try to keep her awake and prevent her from slumping over. 

When Ginsburg returned home, one of her granddaughters called her and confronted her about sleeping during the president's speech, the Daily News said. 

"So I got a call when I came home from one of my granddaughters and she said, 'Bubbe, you were sleeping at the State of the Union,'" Ginsburg said.