With San Francisco 49ers running back Nick Bosa playing in the NFC Championship Game against the Philadelphia Eagles on Sunday, his star brother, Joey Bosa, was walking to Lincoln Financial Field to support him.

But not before he got involved with an Eagles fan who cut him off and recognized him.

Caught on camera by the heckler, he started yelling «Bosa!» in his direction, and the Los Angeles Chargers defensive end didn’t downplay it.

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San Francisco's Nick Bosa #97 lines up against the Philadelphia Eagles during the first quarter of the NFC Championship Game at Lincoln Financial Field on January 29, 2023 in Philadelphia, Pennsylvania.

San Francisco’s Nick Bosa #97 lines up against the Philadelphia Eagles during the first quarter of the NFC Championship Game at Lincoln Financial Field on January 29, 2023 in Philadelphia, Pennsylvania.
(Tim Nwachukwu/Getty Images)

«Hey! When are the Chargers playing this week?» commented the troublemaker.

«Are you chatting with your little friends you fucking loser?» Bosa replied.

WARNING: THE VIDEO CONTAINS EXPLICIT LANGUAGE

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The two kept pacing back and forth as Bosa went to walk to the stadium, but another comment from the fan sent Bosa into an expletive-filled response.

«How are those Bosa tickets going?» said the fan, referring to the $55,546 for his unsportsmanlike conduct penalty and subsequent criticism of NFL officials in the wild-card round loss to the Jacksonville Jaguars.

«They’re good because I can afford them because I’m fucking rich, you screwed f—-,» Bosa said, pointing at the fan.

Joey Bosa #97 of the Los Angeles Chargers looks at the score against the Kansas City Chiefs at GEHA Field at Arrowhead Stadium on September 15, 2022 in Kansas City, Missouri.

Joey Bosa #97 of the Los Angeles Chargers looks at the score against the Kansas City Chiefs at GEHA Field at Arrowhead Stadium on September 15, 2022 in Kansas City, Missouri.
(Cooper Neill/Getty Images)

Bosa’s wild card round ticket came when he was seen arguing with an official as he walked off the field during the second half.

During his post-game press conference, Bosa did not hold back his thoughts.

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«If I tell you anything, I get a $40,000 fine,» he said via NFL Network. «But if they miss a call that ruins a team’s entire season, they can … they’ll probably go back to the locker room after the game like, ‘Haha, I got that a–h—. Oh yeah, I got him 15 yards, what loser'».

The Bosas left «The Linc» not too happy after the 49ers were crushed 31-7 to end their season as the Eagles return to the Super Bowl since winning it in 2018 against the New England Patriots.

Los Angeles Chargers linebacker Joey Bosa (97) reacts against the Jacksonville Jaguars during a wild card playoff game at TIAA Bank Field.

Los Angeles Chargers linebacker Joey Bosa (97) reacts against the Jacksonville Jaguars during a wild card playoff game at TIAA Bank Field.
(Mark J. Rebilas-USA TODAY Sports)

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Nick Bosa finished the game with four total tackles, two of which were for loss. But he was on the field quite a bit as the 49ers’ offense couldn’t get very far with their two quarterbacks, Brock Purdy and Josh Johnson, both injured during the game.