Though if I were advising the former vice president, I'd point out that he's not running against Republicans this time. Running against Republicans, the press lets you get away with murder. Literally ::cough:: Ted Kennedy ::cough.
But Biden is running against Democrats. And a Democrat base who already hates his race, gender, and sexual orientation. They're not going to let him get away with groping 12-year-olds anymore. If it were Cory Booker... maybe.