If you were to do an overview of the lifetime series, it’s safe to Conor McGregor has a hefty lead on Dustin Poirier when it comes to the successful insults landed. On Thursday, however, it was Poirier (27-6 MMA, 20-6 UFC) who landed the best diss of the UFC 264 pre-fight news conference when he took McGregor’s workout program, McGregor Fast, and threw it back in the Irishman’s face. When McGregor (22-5 MMA, 10-3 UFC) was asked by a media member why his niceness for Poirier has vanished ahead of the trilogy fight, “The Diamond” jumped in and answered himself