Fallon also stayed firmly tight lipped on the reason why friend Justin Timberlake and Britney Spears broke up, but acknowledged that he knows what happened…

When Andy Cohen brought out his characteristic game of Plead the Fifth on What Happens Live, it was pretty obvious that he was going to try to get his talk show host guest to rate his fellow slash rival talk show hosts.

What was perhaps even more interesting was the JT revelation – if only Andy had phrased the question better! Well, next time Fallon plays guest rather than host, someone is going to have to press him for the juicy break-up deets.