FORT MYERS — At 11:08 p.m. on Feb. 1, as the Patriots celebrated their Super Bowl victory amid fireworks and confetti, Mike Napoli signed on to his Twitter account.

“Sudden urge to rampage down Boylston!!!” the Red Sox first baseman wrote under the name @MikeNapoli25. “Who is with me???”

He wasn’t joking.

Napoli grew up in Pembroke Pines, Fla., near Miami. He began his big league career in Anaheim, Calif., and played two seasons for the Rangers in Arlington, Texas, for the Angels’ chief AL West rival. At each stop, he emerged not only as a central cast member in the clubhouse but also blended into the community at large with the ease of a chameleon.

So it wasn’t a surprise two years ago that Napoli took to Boston like a duck boat to water.

But Napoli gets the city — like, really gets it — in a way that few of our recent professional athletes have. He just bought a place near Beacon Hill. He’s a regular at the Garden for Bruins games. Hang out enough in the North End and you’re bound to bump into him, most likely dining with friends at one of his favorite Italian restaurants.

And after the Red Sox’ World Series victory parade in 2013, he caroused with fans while romping shirtless down Boylston Street, a scene he will never live down, not that he wants to.

For a native Floridian, Napoli doesn’t even mind snow. Like ex-Bruins Shawn Thornton and Andrew Ference, Napoli is an outsider who has become every bit as Boston as the Freedom Trail, which isn’t easy in a town as provincial as ours.

“It’s just my personality,” Napoli said yesterday after another spring training workout. “I’m going to go out wherever I am. That’s just how I am. But I feel like I fit in there. I’ve had a good time with it.”

And he doesn’t want it to end.

Napoli is about to enter the last leg of a two-year, $32 million contract extension. And although he is focused only on being ready for Opening Day after an offseason of recovering from complex surgery to cure a long-standing case of obstructive sleep apnea, he also has a strong desire to play for the Red Sox beyond this season.

“I’d love to finish my career here,” Napoli said. “And with this surgery, I think it’s going to put a lot of years on my career, just being able to stay healthy, my body recouping. We’ve got a good team, and I like it so much here. It fits me well.”

Even when he came to town once a year with the Angels and Rangers, Napoli always had a good time for reasons that went beyond his seven homers and 1.107 OPS in 62 at-bats as a visiting player at Fenway Park.

Napoli devoured the food and soaked up the nightlife. An unabashed bachelor, he’s extremely close with his mother, Donna Torres, who often picked Boston as the place to meet him on the road. When the Sox expressed interest in signing Napoli as a free agent before the 2013 season, Donna whole-heartedly endorsed the move.

And once Napoli joined the Red Sox, Boston liked him back. Maybe it was his bushy beard, which grew to legendary lengths during the 2013 playoffs, or the fact that he lives downtown. It probably had a lot to do with his prodigious power — he hit 23 homers and slugged .482 in 2013 — and discerning eye (he routinely leads the league in pitches per plate appearance).

“Us winning the World Series my first year there always helps,” he said.

It also helps that, for someone who makes $16 million a year and drives a fancy car, Napoli is as close as it gets to a Regular Joe. Athletes often lament the challenges of playing in a city that has such passion for sports, but Napoli has made it look easy.

“I’m kind of blue collar, you know?” said Napoli, who spent the offseason in the city while recovering from surgery. “Expectations are high there, and for me, I like that. You’re expected to do good, and I expect myself to do good and do my job the best way I can. It’s just how I was brought up. I didn’t grow up there or anything, but I can relate to the city.”

Napoli never did mark the Patriots’ Super Bowl victory with another charge down Boylston. But he did celebrate with fans at a nightclub on Tremont Street.

Chances are, you’ll see him there again this year. And if Napoli has a choice, for the next several years, too.