LANDOVER, MARYLAND - SEPTEMBER 12: Ryan Fitzpatrick #14 of the Washington Football Team reacts as he is taken off the field after being injured against the Los Angeles Chargers during the second quarter at FedExField on September 12, 2021 in Landover, Maryland. (Photo by Patrick Smith/Getty Images)Patrick Smith/Getty Images

Once a Buffalo Bill, always a Buffalo Bill. 

Former Bills quarterback Ryan Fitzpatrick attended the team's 47-17 drubbing of the New England Patriots on Saturday, and he celebrated in true Buffalo style: Shirtless, in freezing temperatures. 

B/R Gridiron @brgridiron

Fitz went FULL Bills Mafia đź—Ł<br><br>(via <a href="">@jessekjm</a>)<a href="">

Jeremy Kelley @JK_Kelley

Yes. That’s a QB for another NFL franchise….shirtless at a Bills game. Your fan base could never. <a href="">#BillsMafia</a><br><br>The legend himself, Fitzmagic. <a href="">

Fitzpatrick, 39, played for the Bills between the 2009-12 seasons, starting 53 games and throwing for 11,654 yards, 80 touchdowns and 64 interceptions. It was one of nine teams he's played for in his career—he played for the Washington Football Team this past season—but Buffalo clearly holds a special place in his heart. 

That's love. And definitely not recommended.