Floyd Mayweather taunts 'bum' Conor McGregor over Manny Pacquiao after Dustin Poirier KO 0 6 24 Jan 2021 13:03 Express.co.uk (sport) Floyd Mayweather has hit out at Conor McGregor and his critics after the Irishman's UFC 257 loss to Dustin Poirier, insisting no-one wants to see McGregor vs Manny Pacquiao in a boxing ring.