In the videos, which were recorded in April 2014, Thicke revealed, "With all due respect, I was high and drunk every time I did an interview last year."
When asked if he was on Vicodin and alcohol during his media tour, Robin reiterated, "I didn't do a single interview last year without being high on both."
At another point in the video, Robin admitted that he wash't always honest about his music, saying, "I tell whatever I want to say to help sell records."
In a separate video, Thicke's collaborator on the song, Pharrell Williams, was also questioned about his ability to read music. He told the attorney, "I am not comfortable. I am not here to teach you music."
After the videos surfaced, Howard E. King, the attorney for both Thicke and Williams, said in a statement, "This is old news. The songs are still different and we look forward to complete vindication on appeal."
Earlier this year, Thicke and Williams were found guilty of copyright infringement of the Marvin Gaye song "Got to Give It Up" in their creation of their own song "Blurred Lines," and were ordered to pay an estimated $7.3 million to Gaye's estate. "Blurred Lines" spent 10 weeks at #1 on the Billboard charts.