Kansas City Chiefs safety Tyrann Mathieu was flagged for a taunting penalty against Tom Brady and the Tampa Bay Buccaneers following a late touchdown by the offense at the second quarter's close. Following a touchdown pass from Brady to wide receiver Antonio Brown, Mathieu approached Brady and boisterously chirped in the quarterback's face before walking away.

Not willing to let the safety have the last word on the matter, Brady then chased Mathieu down to exchange some more NSFW comments before a scrum broke out. While the referees eventually broke up the outburst before it could spiral out of control, the Chiefs defender was issued a penalty, which shortened the field for the Buccaneers on the kickoff.

Check out Tom Brady and Tyrann Mathieu engage in a war of words below.

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While the flag was the first unsportsmanlike penalty assessed to Kansas City, it was the team's eighth violation of the first half overall. In giving up nearly 95 yards to the Buccaneers as a result of the flags, the Chiefs have quickly fallen behind Tampa Bay 21-6 at halftime.

Though Kansas City still possesses one of the deadliest offenses in the NFL, the Bucs have hampered the Chiefs for most of the afternoon, thanks to their ability to get into the backfield to harass quarterback Patrick Mahomes. Though KC displayed some signs of life near the end of the second quarter on a drive that ended in the red zone, the team will likely have to contend with a quarterback in Tom Brady, who appears fired up following his confrontation with the defense.

Considering their early deficit, that may be the worst-case scenario for the Chiefs.