( CNN ) Some viewers of the iHeartRadio Music Awards on Sunday night took to social media to vent about the opening monologue , saying one controversial joke by Jamie Foxx crossed the line . Foxx , the actor and musician who won an Oscar for his portrayal of Ray Charles , hosted the second annual awards show in Los Angeles . `` We got some groundbreaking performances , here too , tonight , '' Foxx said . `` We got Bruce Jenner , who will be doing some musical performances . He 's doing a his-and-her duet all by himself . '' There have been reports that Jenner , an Olympic gold medalist , plans to transition from male to female . However , Jenner has not spoken publicly about any such possibility . Many television viewers took to social media to complain that the joke was offensive to people struggling with issues of gender and sexual identity . The hashtag # iHeartRadioMusicAwards remained a top trend Monday . `` Jamie Foxx just made a terrible , disgusting joke about Bruce Jenner 's rumored transition on this trash awards show , '' tweeted @ laurennostro . `` Seriously # JamieFoxx ? # BruceJenner jokes ? '' wrote @ AngelaPquigley . `` You 're disgusting , that 's not ok . It was n't funny , just mean spirited and lazy . '' Foxx 's joke was n't the only part of the show that made headlines . Pop princess Taylor Swift continued her recent hot streak by winning artist of the year and song of the year for her hit `` Shake It Off . '' Swift also played guitar onstage while Madonna sang her new song , `` Rebel Heart . '' And Justin Timberlake received the iHeartRadio Innovator Award for his achievements as an entertainer . The former N'SYNC heartthrob , who has earned critical praise and commercial success as a solo artist and an actor , said he was n't one of the cool kids growing up . `` They called me different . They called me weird , '' he said in accepting the award . `` Thankfully my mother taught me that being different was a good thing . That being different meant you could actually make a difference so I wan na thank my mom ... '' In his monologue , Foxx also took potshots at the `` Blurred Lines '' copyright-infringement battle and the health of a famous 1990s record executive . Those jokes found more acceptance than the Jenner quip . `` Marvin Gaye had the number one song , featuring Pharrell ( Williams ) and Robin Thicke , '' Foxx said , setting up for his punch line : . `` Marvin Gaye just made $ 7.4 million just last week . He 's making beats in heaven . It 's crazy , '' he joked . `` He might be dead , but he ai n't dead broke . '' Gaye 's children had sued Pharrell Williams and Robin Thicke over the 2013 hit `` Blurred Lines , '' which jurors decided borrowed elements from Gaye 's soul classic `` Got to Give It Up . '' The performers were ordered to pay $ 7.4 million for copyright damages and infringement . The crowd laughed again when Foxx turned to Death Row Records founder Marion `` Suge '' Knight , who has been charged with murder in the hit-and-run death of a man run over by a truck . `` He will not be here tonight , '' Foxx said of Knight . `` He founded Tha Dogg Pound , Snoop Dogg , Nate Dogg , and now he needs a seeing-eye dog . '' Knight collapsed in court recently , as a result of ongoing health issues , after a judge set his bail at $ 25 million in the murder case . He hit his head during the fall , knocking himself out .
` ` He 's doing a his - and - her duet all by himself , '' Jamie Foxx ” of Bruce Jenner . Off - this joke prompted anger on social media , with some calling it ` ` disgusting '' ` has n't spoken publicly about rumors he 's switching from male to female .