M.I.A. almost stole the show from Madonna at the jaw-dropping half-time show at Sunday's Super Bowl in Indianapolis.
The 36-year-old rapper (real name: Mathangi "Maya" Arulpragasam) flipped her middle finger as she performed backup for Madonna, 53, alongside Nicki Minaj for the Material Girl's new song "Give Me All You Luvin'."
The British/Sri Lankan star also uttered a profanity ("I don't give a s***") but the expletive wasn't heard on the live broadcast.
The NFL and NBC alike immediately apologized for the gaffe, which harkened back to Janet Jackson's infamous nip-slip at the Super Bowl alongside Justin Timberlake 8 years ago.
"The obscene gesture in the performance was completely inappropriate, very disappointing and we apologize to our fans," an NFL spokesman said.
Added NBC: "We apologize for the inappropriate gesture that aired during halftime. It was a spontaneous gesture that our delay system caught late." A $500,000 fine was levied by the Federal Communications Commission against CBS following the infamous Janet Jackson moment.