Jimmy Fallon was shocked after hearing Robert F. Kennedy Jr.’s explanation for why he’d been a passenger on late trafficker Jeffrey Epstein’s private airplane twice. During his Wednesday, March 6, appearance on the “Flagrant” podcast, R.F.K. Jr. explained he’s simply met an abundance of celebrities over the years — however, the names he mentioned raised eyebrows. “First of all, I’m in New York for most of my life. And I run into everybody in New York,” the former presidential hopeful explained. “I mean, I knew Harvey Weinstein. I knew Roger Ailes … O.J. Simpson came to my house. Bill Cosby c…