"This is not Trump world."

What: Former Vice President Joe Biden visited The Grand Opera House in Wilmington, Delaware on Sunday during a tour for his new book, "Promise me, Dad: A Year of Hope, Hardship and Purpose," when he was interrupted by an audience member who accused him of sexual misconduct

A man in the crowd stood up and interrupted Biden, who was speaking of his son Beau’s reaction to a pediatrician’s 2017 conviction for molesting infants.

"What about the girls you molested on C-Span at the Senate swearing-in," the man said while taking the video on his phone.

Much of the crowd booed and shouted angrily at the man. 

"No, no. He did it," the man insisted.

"This is not a Trump world," Biden responded. The crowd erupted with cheers and clapping after Biden's response. 

Why: What the man was referring to is a video from 2016 in which Biden is seen holding a girl in front of him for a photo-op.

The video quickly started circulating around right-wing media, feeding into a consistent attempt to depict the former vice president as a sexual predator. 

This line of accusation against him has also served as a go-to Whataboutism during the controversy around the time Roy Moore, the Alabama Republican who has been accused of sexual assault by a number of women, was running his failed Senate bid. 

Biden has advocated for women, working with the "It's On Us" campaign, a national movement to end sexual assault. 

Biden also stated in March that he would "beat the hell out of" President Donald Trump if they'd attended high school together for the way he treated women.