Despite WFAN’s unsporting drive-time inhabitants, it’s called sports radio.

Sunday afternoon, Boomer Esiason, aka Weekend Boomer, was, as usual, seen and heard on CBS’ NFL studio show as a well-comported gentleman.

The next morning on his WFAN show, Esiason, in the role of Weekday Boomer, was heard sharing — and likely forcing — belly laughs after partner Gregg Giannotti hollered, “Look at me, bitches!”

Giannotti had a clever side until he became a requisite drive-time dirt-slinger and provocateur. And no one had more fun than these two with Jeffrey Epstein’s suicide and his alleged sexual deviance. Laughs included a wink-and-nod pedophile pun.

Not too long ago, one’s credibility and public behavior as a member of the broadcast media was assiduously protected as a matter of self-worth, sustained employment and respect for an audience. That was before low became a substitute for funny.

As can be seen and heard on @backaftathis on Twitter, last week Mike Francesa took a call from a young man named Ryan Warnken who suggested that Antonio Brown, just fired for selfishness in the first degree by the Raiders, would make a logical fit with the Patriots.

Francesa jumped him, called him an imbecilic fool, then gave him the hook.

Soon, as if he’d never said anything to the contrary, Francesa authoritatively explained why it makes complete sense that the Pats just signed Brown.

Apologize? For what? Friday he insisted he never said what he so clearly, loudly and firmly said — and is recorded for public inspection.

Last September, Francesa seized on reports that the Raiders would trade star Khalil Mack. Citing unnamed — read: dubious — NFL sources as well as his own inside intel, he lampooned the story as both ridiculous and impossible.

At that moment the Raiders were trading Mack to the Bears.

Naturally, Francesa, acted as if he’d never even whispered a word to the contrary.

Though rarely right, and often colossally wrong, he habitually prefaces his authoritative statements with, “Let’s be honest.” Though honesty has habitually and conspicuously been his weakness.

For 20 years, Francesa has exhibited flimsy credibility and even less humanity. But his bosses are clearly good with the way he treats his audience — and the truth.

Also last week, Francesa cruelly, as if for sport, mocked, abused then quickly flushed an elderly caller, Billy from Bay Ridge, who became slightly confused — which he blamed, justifiably, on Francesa interrupting him. Billy had begun with a polite plea for Francesa to not interrupt him. Fat chance.

Francesa’s haughtiness, shamelessness and standard misanthropy made nothing but sympathy for Billy and scorn for Francesa, who is too self-smitten to realize that only the dim are impressed by bullies.

Weekday Boomer and “Let’s Be Honest” Francesa, the drive-time stars of WFAN.

Showboating has no purpose

After Week 1, Adam Gase’s Jets have already demonstrated recklessness that should have been addressed in the form of an order weeks earlier.

As if there hadn’t already been enough proof of the foolishness of holding the ball up or out before reaching the goal line, last Sunday Jets linebacker C.J. Mosley intercepted a pass then raised the ball, one-handed, above his head, before reaching the end zone.

Why such an all-downside practice persists at the game’s highest-paid, biggest-stakes level remains ignored, indulged or applauded — until one fumbles. Leon Lett played 10 years for the Cowboys. What’s he known for?

Sunday, Richard Sherman — now a 49ers defensive back but still a media go-to guy because he’s a boastful, put-down artist — was headed to the end zone with an interception when he held the ball out with one hand.

He dropped it.

But it bounced back to him. Of course it did. Had it been recovered by the Buccaneers, we’d all have known about it — and seen it 50 times.

Reader David Murphy suggests that ESPN’s “Sunday Night Baseball” might be a tad more sufferable if he knew what Alex Rodriguez was talking about.

Hey, David, if he doesn’t know, why should you?

Last week, after Rodriguez listed Aaron Sanchez among the Astros’ starters, someone must’ve quietly told or texted him that Sanchez is out for the season.

While we’re on the subject, reader Frank Perry was watching that game when he hollered, “My God, shut up!” He then had to yell upstairs to his wife to tell her he wasn’t shouting at her, but to the TV. He thinks she bought it.

From Thursday’s Rob Manfred Era home runs or strikeouts games:

Cubs 4, Padres 1: eight pitchers totaled 30 strikeouts. Four batters struck out three times. Time of game: 3:30.

Royals 6, White Sox 3: against 10 pitchers, 25 strikeouts.

Cardinals 10, Rockies 3: In 3:56, 15 pitchers, struck out 24.

A’s 3, Astros 2: There were 27 strikeouts against 10 pitchers in 3:40. A’s Matt Chapman (32 HRs) and Khris Davis (20 HRs) each struck out four times.

FAN boxing guru turns the Paige

Tony Paige, the last local guy to keep boxing current on the radio, has packed it in as a WFAN mostly overnight host after 24 years. Paige, 66, treated callers with dignity, allowing them to speak their minds.

Thursday’s NFL Network telecast of Buccaneers-Panthers featured Green Day’s latest tune, “Father of All Motherf—–s.” ESPN’s Monday night halftime starred G-Eazy — who raps excessively vulgar, sexually explicit lyrics about young women. Both, of course, were seen or heard with Roger Goodell’s silent blessings.

During Game 1 of Yankees-Tigers on Thursday, YES’ Ken Singleton noted this was the Yanks’ seventh doubleheader, “the most since 1982.” He left it at that. But unlike 1982, this season’s first six were all postponement-driven, two-admission games.

Reader Bob Scotti tuned to the Red Zone Channel on Sunday to find all four games it was tracking were in replay reviews.

While we’re at it, as long as Fox’s Joe Buck continues to parrot red-zone stats as significant, perhaps he’ll be the first to explain them. When do they begin? On first down from inside the 20, or any down inside the 20? Does fourth-and-7 from the 19 count the same as first-and-goal from the 2? Is taking a knee at the 12 to end the game a red-zone failure? How about a short field goal to win the game?

Despite all the NFL-wide individual stats CBS repeatedly posted to a New York audience during Sunday’s Bills-Jets opener, not until late did Odell Beckham Jr.’s stats vs. the Titans first appear. Foresight!

Vice On Ice: Kate Smith out, bookies in. The Flyers are partnering with a sportsbook to turn the Wells Fargo Center into a sports gambling house — especially during home games. That’s why they call him Gary Bet-Man.

Phil Mushnick’s column returns Sept. 27.