Biden made the comments on a podcast with the former deputy prime minister of Britain.
Anita Hill made the #MeToo movement a centerpiece of her commencement address to Rutgers law students on Thursday.
The senator's comments were “just insensitive and again, it’s not appreciated at this moment.”
"We talked about the need for people to stand up and speak out,” Biden said of his conversation with McCain.
The poll started a couple days after Biden said that if he and Trump were in high school, he would take Trump “behind the gym and beat the hell out of him.”
"Any guy that talked that way was usually the fattest, ugliest S.O.B. in the room," Biden added.
"Character is about what you do when no one is watching," Paul Equale, who shared the photo on social media, said.
The former vice president was speaking with CNN's Chris Cuomo.
Biden did not run for president in 2016 because he and his family were grieving over the death of their son.
Biden has said publicly that he's sorry for the way Anita Hill was treated in her 1991 hearing. But he hasn't said it to her directly.
“It’s an escapist liberal fantasy," series creator Adam Reid said. "The goal is that people laugh and feel catharsis at the same time.”
The former vice president could pull in far more independents than the current commander in chief.