To celebrate his special week of shows out of Universal Orlando Resort, Jimmy Fallon decided to bring out the big guns for his latest Lip Sync Battle. Shaquille O'Neal stepped up to the challenge, and the pair's face-off might be the most epic competition yet (only Channing Tatum and Beyoncé have them beat, honestly). Jimmy kicked things off with "Jump Around," but when Shaq started performing Bobby Brown's "My Prerogative," none other than Pitbull appeared. "That's not fair, that's not fair," the late-night host joked. "I got to up my game." Upping his game apparently meant singing John Legend and Ariana Grande's cover of "Beauty and the Beast" (complete with wardrobe changes), before he and Shaq both joined in on a duet of Elton John's "Don't Go Breaking My Heart." We told you it was epic!