Twitter began buzzing on Sunday when a teaser of Bruce Willis as “Die Hard” protagonist John McClane surfaced from several accounts, including Willis’ daughter, Rumer Willis, NFL sideline reporter Erin Andrews and comedy group The Lonely Island. They all tweeted out the clip teasing that something big was coming during the NFL game between the Los Angeles Rams and the San Francisco 49ers, complete with the hashtags #DieHardIsBack and #Ad.