That was strange.

The New England Patriots were booed off their home field Sunday as they headed off for halftime down 13 to the Kansas City Chiefs, reports said.

Despite a comeback bid in the second half, the Pats fell 23-16.

“You hear cheers, you hear boos, that’s part of being in sports,” Brady told reporters following the game.

The booing was a rare occurence, given the Patriots’ dominance over the past two decades with Bill Belichick and Tom Brady leading the team to six Super Bowl titles since 2001, including one last season.

But the Pats, now 10-3, have struggled in recent weeks as their schedule has become more challenging. Brady hasn’t looked like himself, and the offense has spiraled in consecutive losses to the Texans and Chiefs.

Brady was 10 of 19 for 101 yards with a touchdown and interception when the booing began. He also led a 55-yard drive that ended in a blocked field goal, likely piling on to fans’ frustrations.

Brady, whose future in New England is unclear, finished 19 of 36, and did not throw another touchdown or interception in the second half.