Olympic champion Michael Phelps is still up for a marathon party. He made a splash in Vegas with Jamie Foxx, football greats Eddie George and Michael Irvin and old flame Nicole Johnson over the weekend. Friday night at Lavo, Foxx told the crowd to “make some noise for the greatest swimmer of all time.” On Saturday, Phelps danced in the deejay booth at Tao Beach, then jumped into the pool while the footballers cheered him on. He was surrounded by girls as he partied with Christopher Mintz-Plasse, a k a “McLovin,” at Tao for the actor’s 21st birthday.